I don't think people have quite got the implications of google's new headwear (Project Glass). Others have gone before - but Google have shown they can push into the mass market.

I think you should assume from this point forward that anyone wearing eyewear is recording everything they're looking at in sufficient resolution and frame rates to play back your typing later and thus discerning your password.

Previously you'd call this "shoulder surfing" - but they human eye doesn't really do "zoom". Digital zoom from digital eyewear, on the other hand, means your password could reasonably be read off your moving fingers from a bus-length away.

A second factor is now a requirement, IMO. Interesting times.

The following document is a summary of the parties and their positions on various subjects. Publically modifiable, so if you can contribute, please do.

http://spreadsheets.google.com/ccc?key=0AgwGFHFd0TUIdExCbkNZWllUaVRsRG9yZXVVTXhUN0E&hl=en&authkey=CJu2lp8P#gid=0