Sure, there are already plenty of cool options when it comes to encrypted flash drives, but what about one that uses NFC on your Android or even Windows 8 device to unlock it? PQI showed us one such implementation at Computex. Essentially, this NFC flash drive requires an NFC-enabled device to toggle its access mode: full access, read-only, one-time access (and remains hidden afterwards) or hidden. All you have to do is choose the desired mode in the app, type in your preset password, and then tap the flash drive (even when unplugged) with your device to change the former's setting -- provided that the password matches, of course.
Since the encryption is done on the storage controller level, the computer's drive utility wouldn't be able to see the dongle at all if it's hidden, so you wouldn't even be able to format it unless you unlock it or, well, physically destroy it. And that could be anywhere from 8GB all the way up to 64GB of storage space, when the drive launches in Q4 this year.