I think if you have some secret data, a secured USB drive is so necessary for transporting them.
Futen, a Japanese company recently released its USB drive, Lockface that can be locked by face recognition technology. So security, others can’t use your USB drive stead of unlocking it with your head. Alternatively, you can also use normal password, ignoring the face recognition system. It features 4GB memory capacity, and is sized at 22x4x55mm.
Lockface USB drive is available for $110 USD $ in Japan.