
One of the biggest drawbacks to the iphone is.... you can no longer use it as a hard drive. I used to transfer everything with my ipod. So I have been searching for the perfect USB. I stumbled across this one over at ThinkGeek, the Ironkey.
"...They've developed the perfect solution that's one-part thumb-drive, and two parts Mission: Impossible. Their thumb drives hold up to 4 Gigabytes of data, but includes a hardware encryption chip that scrambles the data so as to be completely unreadable without a password.
Passwords can be hacked, but not the IronKey. It's built to withstand attacks both virtual and physical. 10 incorrect password attempts, and the encryption chip self-destructs, making the contents of the flash drive totally unreadable. The contents of the drive are filled with epoxy, so if a hacker tries to physically access the chips, he'd more likely damage them instead. Even if he did get access to the memory chips, they'd be worthless without the encryption chip. Electron-shielded, even a scanning electron microscope can't get inside...."
Now if you can only put your weed in it you would be set. For more info and a longer review check out ThinkGeek. They even have a demo you can watch at Ironkey.

