What is USB ?
Universal Serial Bus (USB) is a kind of flash memory that stores informations so that it can be displayed on personal computers. Compared to other storage devices such as compact disks and floppy disks, USBs are much smaller in size. But the purposes of all the devices remains the same ; for data backup and storage.
Where is USB used ?
In today world all the computers, gaming consoles and digital devices like mouse, keyboard, cameras, smartphones and tablets are all equipped with USB technology. In fact it is one of the most commonly used interfaces for connecting peripherals.
The initial version of USB 1.0 was known to suffer from communication speed. This urged the developers to produce USB 2.0 for meeting their expectations. The latest standard of USB is the USB 3.0 released in 2013. Similar to other storage devices, USBs comes with both pros and cons. If you are planning to purchase a USB, it is essential to have knowledge on its pros and cons.
In this article, I will be examining the Advantages and Disadvantages of USB Flash drive . Through this post, you will know the pros and cons of using USB flash drive.
What Are Advantages And Disadvantages Of USB Flash Drives?
We all have been making use of USB flash drives for a long time. They are quite helpful, whether you have to use them in your personal computers, your gaming consoles, or other complex computing systems. The USB flash drives are one of the best external storage devices we have come across.
But as we all know, everything comes with both advantages and disadvantages, so the same applies to USB flash drives. If in case you are planning to buy one, it's essential to get well versed with both of its pros and cons.
Advantages Of USB Flash Drives
Portability
What would you prefer to carry an external hard drive or a USB flash drive? Well, most of us would like to go with a USB flash drive only because of its portability feature. It can be carried easily from one place to another and can be placed in your pocket, wallet, or purse. On the contrary, in the case of other big devices, it might difficult for you to carry them and so you would need a larger bag for them.
Storage Capacity
The early versions of the USB flash drive did not have much storage capacity, but with time and technology, they have evolved. And now, we do have a USB flash drive that has a storage capacity of around 2 terabytes (aka 2TB).
Image Caption: Kingston 2TB World's Highest Capacity USB Flash Drive
Yes! You heard it right, 2TB storage capacity in that tiny storage device. So, you will not have to carry your external hard drive in case you need a large storage capacity, and the whole purpose can be fulfilled with a USB flash drive.
Read And Write
Whether you have to store some important digital documents, files, images, or videos, you can easily copy them to your USB flash drive. It does not take much time to transfer the data. Considering the fact, it's one of the best devices to use when you want to share the data with others. Also, in case if anything needs to be deleted, it can be done in a matter of seconds.
Compatible
It does not matter if you want to use your USB flash drive on a laptop, a desktop, or a digital camera; it's compatible with every device. There are many devices that you can use with USB flash drives.
However, make sure your device has the same type of USB port as your USB flash drive. Otherwise, you can't connect that USB flash drive to your device. If you try to do so, there would be huge physical damage to that USB port.
Durable
Durability is always a concern when you want to choose any USB flash drive. If you drop a hard drive, there is a chance that your hard drive will stop working, and complete data stored in it is gone.
Image Caption: Corsair Survivor USB Flash Drive - Durability Testing
But in the case of a USB flash drive, it will still work, and the data stored in it will remain safe. However, it might stop working when they become corrupt, but the chance of them getting corrupted is quite low.
Easy Accessibility
Because of the plug and play feature, USB flash drives are the best device to make use of when they come to ease of accessibility. For working or accessing the files, all you have to do is to plug them in your computer and then start using them without having to put in much effort and time.
Affordable
If you compare a USB flash drive with other external storage devices, you will find that it's more affordable than them. Hence, it can be purchased by anyone with a low budget, even though you have to spend more money depending on the size of storage capacity. But still, when it comes to affordability, USB flash drives are quite useful.
Data Security
Thanks to the latest technology, the USB flash drives have security features available in them. You can easily enable authentication and data safety features that allow you to safeguard your USB flash drive.
Image Caption: Toshiba USB flash drive with password protect to encrypt your sensitive data.
Once the user has stored the data in it, the data will be encrypted and protected with a password, or a few extra security layers depending on the type of USB flash drives. In short, no one can have access to it without following all the security measures.
Disadvantages Of USB Flash Drives
Easy To Lose
The small size of USB flash drives does make them portable but also puts them on the risk of easily getting misplaced. They might easily fall from your pocket or wallet, or even anyone can steal them. Such situations can become problematic for you, especially when you have some sensitive data or important files stored in them. In case, if you are making use of USB flash drives, we suggest you keep them safe so that they don't get misplaced.
Corruption Issue
We all tend to make use of these storage devices on different computer systems and gadgets. They could contain viruses, malware, or other such malicious programs, which can corrupt your storage devices, and even there is a possibility of data corruption. Once the files stored in your USB flash drive become corrupted, they can't be used again, as you will not be able to read or write anything on them. Using USB flash devices on different systems can also cause big damage to your computer systems and gadgets by corrupting them, by transferring the malicious programs from one system to another.
Rewrite Limitation
This is one limitation with USB flash drives that the number of times you can rewrite the data is limited. Even though this is not a bigger limitation, you can do that up to a certain number only, and the number is roughly 100,000 times. For some people, this can be a problem, who are regularly writing and deleting data, but for an average user, this is not a very big problem.
Now, you are aware of the number of advantages and disadvantages of USB flash drives. So, you can easily decide whether you want to make use of it. However, if we have to suggest a perfect and portable storage solution, we would recommend using USB flash drives, as there are just a few disadvantages that you can ignore.
Practical Uses for a USB Flash Drive You Didn't Know About
You've used USB sticks to transport files between computers and back up files, but there is much more you can do with a USB stick.
You've used USB sticks to transport files between computers and back up files. But did you know about the other uses for a USB stick? You can use one to lock and unlock your computer---just like in the movies.
You can also use a USB flash drive to quickly connect to a wireless network on all your PCs, increase your computer's performance, or even run a web server---directly from the USB stick itself.
Here are several cool things to do with a USB drive.
1. Use a USB Flash Drive to Lock/Unlock Your PC
Do you want to lock and unlock your computer with a physical key, like they do in the movies? With the PREDATOR tool, you can. It's available for Windows 10,
PREDATOR turns a USB flash drive into an access control device---a key for your computer. When you leave your PC, unplug the USB stick and your computer will be locked. When you return, plug it back in and your computer will be unlocked.
It's like using the Lock function in Windows, but you don't have to type your password when you return.
PREDATOR is available in three editions:
- Home Edition - $10, no support
- Professional Edition - $15, no support
- Professional Edition + 1y Support - $30, 12 months support
2. Run Portable Apps Anywhere With a USB Flash Drive
One of the oddest things about software is that it usually needs to be installed. With portable apps, however, that isn't the case.
Portable apps and games can be easily copied to a USB stick, then run from any suitable device. This is usually a 32-bit or 64-bit PC. Browsers, email tools, messaging apps, and games can all be run from a USB flash drive.
It's a particularly useful solution if you're keen to keep a selection of apps close to hand to use on any PC that might be nearby. This might be in a library, or even a cyber café at a holiday resort.
3. Increase Performance With ReadyBoost
If you have a slow hard disk drive in your computer, ReadyBoost can help speed things up. When you enable ReadyBoost for a drive, it acts as a hard drive cache, caching frequently used files. If it's faster to read from the USB stick instead of your HDD, Windows will read the flash drive cache instead.
You won't see much of a performance boost if you have a 7200+ RPM drive. If you have a solid-state drive, Windows won't let you use ReadyBoost because the cache will be slower than your SSD.
To enable ReadyBoost, right-click a USB stick in Windows Explorer, select Properties, and use the options on the ReadyBoost tab. Windows will only let you enable ReadyBoost if your USB stick is fast enough, so you might see these options grayed out for some devices. ReadyBoost also requires a flash drive with at least 256 MB of free space.
4. Back Up Your USB Drive With Win32 Disk Imager
If you're using your USB flash stick for many purposes, it might be useful to back up the contents. An easy way to do this is with Win32 Disk Imager.
Although Win32 Disk Imager is usually used to write bootable disk images to flash drives, it can also create images. Simply install and run the tool, insert the USB stick, and select a destination and name for the Image File. Click Read to clone the disk contents.
When you need to restore the disk image, simply browse to the image and click Write.
5. Store Vital Travel Documents
If you travel often, you've probably mislaid documents. Visas, booking confirmations, even passports can easily go missing. Packing papers in the wrong bag can lead to problems if baggage handlers make a mistake.
One of the most important things you can put on a USB are your travel documents. Simply slip it into your wallet or bag and carry it with you. It might even be worth scanning your passport to provide immigration with the information they need to conduct background checks if your passport has gone missing.
6. Install Almost Any Operating System With a USB Stick
Bootable USB disk images of operating systems can be used to install a new OS on your PC.
For example, Windows 10 users can create a bootable USB installer disk using a dedicated tool. In the event of a problem with the operating system, this can be used to recover or even reinstall Windows.
Similarly, all manner of Linux based operating systems can be installed from USB.
It's even possible to create a USB installer disk for macOS.
7. Stay Secure Online With Tails Live Operating System
Alternatively, you might be looking for an OS that you can run from USB to keep your online activity private.
The solution to this is Tails, which unlike standard operating systems, preserves your privacy and anonymity. No logs are kept on the operating system. Meanwhile, state of the art cryptographic software encrypts your files, emails, and instant messages, while internet data is routed via Tor.
Each time you use Tails on your USB flash drive, it starts a whole new session, retaining no data. This helps to enhance your online privacy and security---just be sure to use secure passwords!
8. Boot a Live Operating System With Your Flash Drive
You don't have to install a whole new operating system on your computer with a USB drive. You might just boot one instead.
From portable versions of Windows to "Live" builds of Linux operating systems, this option has a huge privacy advantage. You see, the OS is loaded into the computer's memory, which means when the computer restarts, data about your activity is lost.
Furthermore, you can keep your portable operating system in your pocket, ready to plug into any computer. As cool things to do with a USB stick go, this is up there with the best.
9. Make a Password Reset Disk on USB for Windows 10
Concerned you'll forget your Windows 10 password? Already lost it?
If you use a local account in Windows, there is no easy way to reset the password if you forget it. The online account (e.g. one that uses an @Outlook – free personal email and calendar from Microsoft account) can be reset from any other device, but with a local account, things are different.
Your choice is simple: abandon the account, or make a password reset disk. For the second option, plug in a formatted USB stick, click Start, and type "password reset disk." When you see Create a password reset disk click Open and follow the instructions.
It's a good idea to permanently use the USB flash drive for this purpose, so keep it in a drawer for next time, just in case.
10. Rescue Your PC From Hardware Failure and Viruses
If your PC has crashed and you need to recover it, or retrieve data from your hard disk, a USB disk is perfect. Flash drives are ideal for this, able to store and boot recovery tools to help you fix your computer.
These tools include:
- Hiren's BootCD
- SystemRescue
- Knoppix
- Ultimate Boot CD
- Bootable Rescue Disk
- Trinity Rescue Disk
All these tools will run from USB. Simply download the preferred tool, write to USB, and boot your prone computer from the USB stick.
That's 10 Different Ways You Can Use a USB Flash Drive
By now you should have an idea of the different ways you can use a USB flash device.
- Unlock your PC
- Run portable apps
- Improve Windows performance
- Store vital documents for travel
- Backup your USB flash device
- Install any operating system
- Stay secure with Tails operating system
- Boot an operating system
- Make a password reset disk for Windows 10
- Rescue your PC from hardware failure and viruses
A USB flash drive -- also known as a USB stick, USB thumb drive or pen drive -- is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a keychain. A USB flash drive can be used in place of a compact disc. When a user plugs the flash memory device into the USB port, the computer's operating system (OS) recognizes the device as a removable drive and assigns it a drive letter.
A USB flash drive can store important files and data backups, carry favorite settings or applications, run diagnostics to troubleshoot computer problems or launch an OS from a bootable USB. The drives support Microsoft Windows, Linux, MacOS, different flavors of Linux and many BIOS boot ROMs.
The first USB flash drive came on the market in 2000 with a storage capacity of 8 megabytes (MB). Drives now come in capacities ranging between 8 gigabytes (GB) and 1 terabyte (TB), depending on manufacturer, and future capacity levels are expected to reach 2 TB.
The memory within most USB flash drives is multi-level cell (MLC), which is good for 3,000 to 5,000 program-erase cycles. However, some drives are designed with single-level cell (SLC) memory that supports approximately 100,000 writes.
How a USB flash drive is used also affects its life expectancy. The more users delete and write new data on the device, the more likely it will degrade.
USB specifications
There are three main USB specifications that USB flash drives can connect through: 1.0, 2.0 and 3.0. Each specification publication allows for faster data transfer rates than the previous version. There have also been several prereleases and various updates in addition to these three versions.
USB 1.0 was released in January 1996. It was available in two versions:
- USB 1.0 low-speed: Provides a data transfer rate of 1.5 megabits per second (Mbps).
- USB 1.0 high-speed: Has a data transfer rate of 12 Mbps.
Version 1.1, an update that fixed various issues in 1.0, was released in September 1998 and was more widely adopted.
USB 2.0, also known as Hi-Speed USB, was released in April 2000. It was developed by the USB 2.0 Promoter Group, an organization led by Compaq, Hewlett-Packard (now Hewlett Packard Enterprise), Intel, Lucent Technologies, Microsoft, NEC Corp. and Philips. USB 2.0 features a maximum data transfer rate of 480 Mbps. This boosted performance by up to 40 times. It is backward-compatible so USB flash drives using original USB technology can easily transition.
USB 3.0, also known as SuperSpeed USB, was introduced in November 2008. The first 3.0-compatible USB storage began shipping in January 2010. SuperSpeed USB was developed by the USB Promoter Group to increase the data transfer rate and lower power consumption. With SuperSpeed USB, the data transfer rate increased 10 times from Hi-Speed USB to 5 Gigabits per second (Gbps). It features lower power requirements when active and idle, and is backward-compatible with USB 2.0. USB 3.1, known as SuperSpeed+ or SuperSpeed USB 10 Gbps, was released in July 2013. It bumped up the data transfer rate and improved data encoding for higher throughput.
Pros and cons of USB flash drives
USB flash drives are small and light, use little power and have no moving parts. The devices, whether they are encased in plastic or rubber, are strong enough to withstand mechanical shocks, scratches and dust, and generally are waterproof.
Data on USB flash drives can be retained for long periods when the device is unplugged from a computer, or when the computer is powered-down with the drive left in. This makes a USB flash drive convenient for transferring data between a desktop computer and a notebook computer, or for personal backup needs.
Unlike most removable drives, a USB flash drive does not require rebooting after it is attached, does not require batteries or an external power supply, and is not platform dependent. Several manufacturers offer additional features such as password protection and downloadable drivers that allow the device to be compatible with older systems that do not have USB ports.
Drawbacks to USB flash drives include the ability to handle a limited number of write and erase cycles before the drive fails, data leakage and exposure to malware. Data leakage is a problem because the devices are portable and hard to track. A security breach due to malware can occur when the device is plugged into an infected system. However, encryption and a routine scan of the USB flash drive are common approaches in protecting against a security breach.
Major vendors
Examples of USB flash drive manufacturers include Hewlett Packard Enterprise, Kingston Technology Corp., Lexar Media Inc., SanDisk, Seagate Technology, Sony Corp., Toshiba Corp. and Verbatim Americas LLC.
Life Expectancy of a USB Flash Drive
USB flash drives are great to use for storing digital files and are replacing CDs & DVDs as the preferred storage media of choice.
The advantages of flash drives is that they are portable, durable, and have incredible storage capacity (ranges from 64MB to 256GB as of 2010). Furthermore, they are able to retain the memory even after the power is turned off. But does the memory last forever though? Should you use them to store important documents and files? How long do they last?
If you simply write data to a USB flash drive and put it away in a safe place for 10 years, it will work again and all the data will still be there.
But if you continue to use it over and over again, it will definitely wear out eventually.
USB Flash Drives Have Finite Number of Write/Erase Cycles
The life expectancy of a USB Flash Drive can be measured by the number of write or erase cycles. USB flash drives can withstand between 10,000 to 100,000 write/erase cycles, depending on the memory technology used.
When the limit is reached, some portion of the memory may not function properly, leading to lost of data and corruption.
Of course, the flash drive’s life can also end prematurely if you abuse it or subject it to extreme environmental conditions. Additionally, if low quality memory components are used, the flash drives can fail at a much earlier time.
Beware of unknown brands, as they may use low quality components and cut corners in the manufacturing processes in order to keep cost low. If you are looking for high quality USB flash drives, find vendors that use only grade A memory and have ISO-9001:2008 certified factories.
Should You Use Flash Drives to Store Important Files?
The best usage of flash drives is to copy and transfer files from one computer to another. If you want to use it to store important files such as family photos and videos, it is recommended to make duplicate copies.
Caring for Your Flash Drive
To prolong the life of your flash drive and ensure that it operates properly for years to come, here are some precautions to follow:
- When not using the flash drive, be sure to cover it with a cap to prevent the accumulation of dusts and contaminants on the contacts.
- Do not expose your flash drive to harsh conditions, such as extreme temperatures and humidity.
- Never yank the flash drive out of the USB port while it is still in operation. Also, you should “Eject” the drive (Do a right click on the USB drive and select “Eject”) before removing it from your computer.
- Do not leave it plugged to the computer for prolonged period of time. If you do not use it, just unplug it from your computer.
The Best USB Flash Drives
These WIRED-tested memory sticks are a virtual filing cabinet in your pocket.
ONCE UBIQUITOUS, USB flash drives have declined in popularity with the advent of the cloud, but these portable devices have a lot to offer. Also known as thumb drives or memory sticks, flash drives provide storage to back up precious photos, play movies on the big screen, or copy files from one phone or laptop to another. They are affordable, small enough to fit on a keychain, and boast ever-increasing capacities and data transfer speeds.
After testing many, these are the best USB flash drives we recommend for various purposes and budgets. If you need more than 1 terabyte of storage, check out our guide to the Best Portable Storage Drives.
Best Overall
SanDisk Extreme Pro (128 GB)
Striking the perfect balance between speed, reliability, and price, the SanDisk Extreme Pro is tough to beat. It has a sleek and durable aluminum case with a loop for attaching it to a key ring. Push the plastic slider to reveal or hide the USB-A plug, and it's completely operable with one hand. In our tests, the speeds matched what SanDisk advertises (420 megabytes per second read, 380 MB/s write), making it ideal for anyone regularly copying files between devices. You get a variety of storage capacity options (up to 1 terabyte) and a lifetime warranty.
Best USB-C Drive (and the Fastest)
Kingston DataTraveler Max (1 TB)
This drive copied the entire camera folder from my Pixel phone to my laptop so quickly I feared it must have failed. But when I checked my laptop, everything was present and correct. It’s a very lightweight plastic drive with a ridged top that allows you to slide the USB-C plug in and out. A tiny loop at the top means you can attach it to a key ring. It’s a great choice if you want to back up or move files between smartphones, tablets, or laptops with USB-C ports. It’s by far the speediest drive I have tested (1,000 MB/s read, 900 MB/s write), so it’s especially perfect for transferring large files. We've linked to the 1-terabyte model, but there are 256- and 512-gigabyte options available too.
Best for Phones
SanDisk iXpand Luxe (128 GB)
If you want a flash drive to back up and copy photos and other files from your smartphone, I like the iXpand Luxe. It has a Lightning plug for iPhones and iPads at one end and flips to reveal a USB-C plug at the other, so you can transfer files to or from Android devices and laptops. It has a metal casing with a loop for a keychain, and it is very slim. This design means that one plug is always exposed, and while SanDisk includes a separate plastic cover that slots on, I fear I'll inevitably lose it. Storage options top out at 256 gigabytes.
If you want to use this drive with an iPhone or iPad, you must install the iXpand app (not required for Android devices). It works well, but it’s not the fastest drive (90 MB/s read, 35 MB/s write). Backing up photos from my wife’s iPhone took a couple of hours the first time. Handily, you can configure the app to automatically back up photos when you insert the drive. Don't have a USB-C port on your laptop? Then the very similar iXpand Go ($60) is the way to go. It sports a Lightning port on one end and a USB-A plug on the other.
Most Durable
Corsair Flash Survivor Stealth (64 GB)
Seeking a flash drive with a durable enclosure? The Survivor Stealth from Corsair is tough to beat. It has a ridged, cylindrical, anodized aluminum housing with ridged rubber covers at each side. One end has an opening for a keychain, and screws open to reveal the drive, which has a standard USB-A plug. When screwed shut properly, this drive is waterproof to a depth of 200 meters, and the enclosure is vibration- and shock-resistant. I dropped it in a glass of water and let the cat chase it around, and it still works fine. Its performance is fairly average (85 MB/s read, 70 MB/s write), so it takes a while to complete a big backup or transfer large files. Its storage capacities are also relatively small and go up to 128 gigs.
Most Secure
Lexar Jumpdrive Fingerprint F35 (128 GB)
You can get USB drives with all sorts of different security measures, but this Lexar model has a convenient fingerprint scanner. The body of the drive and scanner are metal with a loop for a keychain at the top and a black sliding plastic cover to protect the USB-A plug. You have to set the fingerprint scanner up on a Windows PC, and you can register up to 10 fingerprints. I registered my thumb, and it was scanned as soon as I slotted it into a computer, giving me access to the secure partition, which boasts 256-bit AES encryption.
There is also a public partition that can be accessed like a regular drive, so you can access some files without fingerprint protection if you need to. Read speeds are quite good, but write speeds are slow (150 MB/s read, 60 MB/s write). You can get it in 32-, 64-, 128-, or 256-gigabyte options.
Ejecting and Formatting Drives
Best Practices
It's a good idea to format your drive before you start using it. You'll usually be asked what format you want to use. Almost every device will recognize the FAT32 format, but it limits the individual file size to 4 GB. Go for exFAT if you have larger files. If you format a flash drive, it will completely wipe everything stored on it. Here’s how to do it manually:
- On a Windows computer: Open File Explorer and look for your drive under This PC. Right-click on it, and select Format.
- On a Mac: Type Disk Utility into the Search, or find it via Applications > Utilities. Select your drive from the list and click Erase at the top. Then you can rename and choose a format.
- On a Chromebook: Open Files and right-click on your drive to choose Format device.
You're probably familiar with warnings about removing a drive without ejecting it first. But there’s a genuine risk your data will be corrupted, so here's how to do it properly:
- On a Windows computer: You can click the Safely Remove Hardware notification icon in the taskbar and choose the Eject option. If you prefer not to have to eject, type Device Manager into the search bar and click to open. Expand Disk Drives and right-click on your USB flash drive, choose Properties, Policies, and set to Quick Removal.
- On a Mac: You will see an eject icon listed next to the drive name in Finder, or you can simply drag the flash drive image on your desktop to the trash.
- On a Chromebook: Open Files and right-click on your drive, then select Eject device.
- On an Android device: You can open and expand the USB notification to find an Eject option.
- On an iPhone or iPad: There is no eject option. Ensure no data transfer is in progress before you pull it. It’s a good idea to close the Files app or whatever app you were using to transfer files.
How to Get the Most from Your Drive
Storage Tips
There are a few things to keep in mind when you’re shopping for USB flash drives, and we also have some tips for using them.
Capacity: To decide on the capacity you need, check the size of the folders or files you want to copy first. Each USB drive in our guide has a stated capacity, but the usable storage available to you will be slightly less than that because the device’s firmware requires space.
Speed: USB standards are advancing all the time, and we recommend USB 3.0 as a minimum, though higher is better. While USB standards have different theoretical maximum speeds, it’s crucial to check the read and write speeds the manufacturer states for each drive. If you're primarily transferring data, you'll want to look for a drive with high write speeds. If you're planning on launching software on a computer through the drive (like a video game), then you'll want a model with high read speeds.
Compatibility: Many flash drives will work with any device with the relevant port, but it’s worth checking compatibility to avoid disappointment. If you want to use a drive with an Android device, it will require USB on-the-go (OTG) support. Most Android devices do support USB OTG. You will get a notification when you insert a flash drive with options that should include File Transfer. You can try the USB OTG Checker app to confirm support if you’re unsure. Apple’s iPhones and iPads don’t support USB OTG, but you can install a companion app for drives, like SanDisk’s iXpand series.
Connectors: Most flash drives have USB-A connectors, but you can also get drives with USB-C, MicroUSB, and Lightning connectors. If you plan on using a flash drive with your smartphone and computer, the easiest solution is to snag one with both the required types of connectors. You can also buy USB hubs with multiple ports or adapters, but pay close attention to the supported standard or it may limit your data transfer speeds. This Anker USB-A to USB-C adapter, for example, is USB 3.0.
Security: Remember that USB drives can cause security issues, particularly for businesses, and you should never plug in random drives you find lying around. If you plan to keep sensitive data on your flash drive, then consider biometric or passcode protection and look into the level of encryption it offers. There are software services that offer encryption and allow you to password-protect your files on any USB flash drive.
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