Worried about somebody getting at the precious files on you flash drive? Try keeping it in your pocket and not leaving it on the bus. But if you're really worried you should handcuff it to your wrist like a briefcase filled with pirate treasure. Alternatively, get a Personal Pocket Safe USB Drive ($99).
[The drive] features a built in num keypad that requires you to enter a pin code before you can access your data. It is the 256bit encryption, if someone try to access your data by forcing access, the Personal Pocket Safe USB Drive will automatically destroy all data stored on the drive. However, if you do worry that you'll forget your PIN you can back everything up online, and there's also an optional PIN replacement assistance service available too.
Wow, that seems pretty intense. You must have some seriously serious files in order to require this much security. What are you, a spy? And, if so, how about hooking me up with a bow tie camera?
Personal Pocket Safe USB Drive [likecool]
Thanks to Ste, who keeps his data protected the old fashioned way: with hungry lions.