Pen Drive Locker/Unlocker is a program with a pretty self-explanatory name - it allows you to block and unblock your USB flash drive.

This type of software can provide the level of security you need to protect your information from people who can easily view the content of your USB flash drive without your knowledge.

Since this is a portable product, installing Pen Drive Locker/Unlocker is not necessary. This means that you can directly run its executable file from the computer in use. What's more important is that the Windows Registry does not receive new entries, and no files are left behind on the hard drive after program removal.

The interface of the app is based on a small frame where you can disable the removable driver for the USB or make it read-only. The latter option prevents users from cutting, deleting or renaming data (but it can be copied). Evidently, you may also restore the USB flash drive to its normal status.

Once you select an action, you must save the changes by clicking a button. However, it order for the modifications to be applied, you must remove and insert the flash drive into the computer.

Pen Drive Locker/Unlocker runs on a very small amount of CPU and system memory, so it shouldn't put a strain on the computer. It worked smoothly in our testing, without hanging, crashing or popping up errors. Thanks to its intuitive layout and overall simplicity, first-time users can quickly get familiarized with the app's features.

Just make sure not to save the program to the flash drive whose status you want to disable. Otherwise, you need to have a secondary copy placed on the hard drive, in order to remove this restriction and return its status to normal.