$80 for a small thumb drive is just excessive, I don't care what sw is on it, no matter what it is there's free software that's better. I do see some value in carrying some scanned personal docs etc. on an encrypted thumb drive. I have a really tiny flat one in my wallet (Kingmax Super Stick, google for it, it's great and the 256 meg one was under $10) though mostly for general purpose use. The MicroSD cards are really tiny (like 10mm square and 1.5mm thick) and would use almost no space in a PSK or in a watertight match case, but you need an adapter to plug them into a usb port. The Super Stick is larger than MicroSD but should still fit ok with other stuff in a PSK or spy capsule. Another idea is to upload your encrypted files to a remote web site or just email them to yourself on hotmail or gmail. For emergency medical info I'm sure Paramedicpete is right, the Medic Alert bracelet is the only thing that will do any good.