An information leak becomes a social problem.It may be given a huge loss to a company or individual by an information leak. So you should have security software to protect your property.There is much security software for PC, but there is little security tool for a mobile device.USB Flash Security is a security tool for mobile devices.It can help you to protect you mobile devices.Also, it has many other functions. There are five editions in 'USB Flash Security'. USB Flash Security (Free) USB Flash Security+ (Charge $9.99 USD) USB Flash Security++ (Charge $19.99 USD) USB Flash Security# (Charge $39.9 USD) USB Flash Security## (Charge $49.99 USD) There some of the functions of "USB Flash Security" following. 1. Protect data in USB flash memory by a password. 2. Disk format (Ver.+, Ver.++, Ver.#, Ver.##) 3. Data restoration(Ver.++, Ver.#, Ver.##) 4. Adjust the size of Protected area and Unprotected area (Ver.#, Ver.##) 5. Safely remove software which installed in Protected area (Ver.+, Ver.++, Ver.#, Ver.##) 6. Limit of inputting wrong password (Ver.+, Ver.++, Ver.#, Ver.##) 7. Register user info. (Ver.+, Ver.++, Ver.#, Ver.##) 8. High-speed release (Ver.+, Ver.++, Ver.#, Ver.##) 9. Auto-lock (Ver.+, Ver.++, Ver.#, Ver.##) characteristics of "USB Flash Security" [Install "USB Flash Security" to USB flash memory.] The security release tool will be installed in USB flash memory. So a PC that "USB Flash Security" is not installed in it can also release the security. [USB flash memory is locked by a password.] A password is necessary to access the "protected area", when "USB Flash Security" is installed to USB flash memory. [Self-locking] Unplug the USB flash memory from PC, it can be locked by a password automatically. [It will be the same transfer speed after installing "USB Flash Security".] Files in the USB flash memory will not be coded, so the speed of read and write will not be influenced by installing "USB Flash Security".