Years ago, well before these little portable USB drives started showing up, I decided that what I really wanted was a storage device that fit on my keyring. Something that feels safe and solid, moreso than a creditcard-style device; I wouldn't want to put something important in my wallet, since I sit on it every day. Something that would be stupidly simple for anybody who's ever unlocked a door to use. To heck with wireless, just let me walk up to a computer, stick my keydrive in, and have access to the data.

The current crop of USB-keyring devices are a step in the right direction, but they lack the solidity they need for people to feel safe about using them. They also lack a decent plug-type, since USB was really designed for cables and not for dongle-like things hanging directly off the system; they have no retension mechanism to keep the drive in place while you're working.

Such a thing would also need some kind of hardware-level security built into the specification. Since biometrics aren't here yet (and won't be for a long time), some sort of integrated encryption with a keyphrase would probably be good enough. Base it on E4M or one of its descendents.

Anyway. This is the sort of thing that -I- want. Everybody's going to have different tastes, but personally I think the idea of people walking around with their personal data on their keychains is a sensible concept.