A new concept is starting to appear in encryption services for data and messaging: zero knowledge. Providers of such services claim that they do not know who you are, and that they never store the encryption key anywhere outside of your device. One such service from FoxyFone of Switzerland (a country famous for bank security and secrecy) is now available on the Apple App Store for the iPhone, iPod Touch, and iPad. The app, Foxygram, lets the user encrypt data on the device, including contacts, email, pictures, and video, with 256-bit AES security.
What do you use your USB flash drive for? Perhaps you store work documents, photos, music, or movies on them. If you think they're cool because you can store and transport files with them, wait till you see what else you can do with them.