[Ti] Password protect USB flashdrive?

[maf291 at nyu.edu]

i just got one of those USB pocket drives... the swissmemory pocket knife
version. Very cool, but does anyone know of a piece of software out there
that can protect my data? encrypt, or at least password protect? Just in
case I lose my keys... and ideally crossplatform, so that whenever I plug
it in, I am prompted for a password?

Swissbit provides a piece of software called Securelock, but it's WIN only. 

thanks much!

m