From USB Safeguard:
USB Safeguard is a portable software that allows you to protect your private files with a password on your removable drive using the secure AES 256 bits key. It protects data by creating a password-protected virtual drive on your portable storage device (USB flash drive, HDD hard drive, SSD, memory card). Once setted, no one will be able to access your private files without the correct password! USB Safeguard is a portable software and has been developed to run directly from your drive on any PC and place (Internet cafe, PC office, etc.) without admin rights. Keeps data safe on all systems including Windows, Mac and Linux, No requires installation, runs directly from your drive, Instant lock when unplug the drive. Free version works only with USB Flash drive of size max 2 GB!
Free software works pretty well albeit limited to 2GB drives.
Pay close attention when considering the paid version. Licenses are per "USB device." This may seem clear from the website today, but when I purchased my license the developer had a popup on the website indicated that purchasing a license that day would give you a license for two COMPUTERS, not two USB devices. Since English is a second language in this situation, the developer probably meant it would cover two USB drives, not two computers, but I purchased based on what was said, not what I had no way of knowing was intended. Now I am stuck with ONE USB drive I can us, and can't activate a second one (I reformatted my second USB and now the activation is failing per his clunky licensing method.
Use the free version, but avoid the paid version unless and until this developer fixes this clunky activation.
If the popup add indicated licenses were per USB device, I would have kept looking. This solution is too problematic for the price.
You not pay attention!
Popup on the website!?? license for two COMPUTERS, not two USB devices???
None of that! The End User License Agreement is clear:
"The license is valid for only one storage device..."