I have been thinking about new authentication methods and some of the ideas I came up with are quite interesting. One of them is the Mouse Pad Key.
Mouse Pad Key uses the optical mouse to read keys on a sheet of paper by moving the mouse around on top of the paper. The idea is still theoretical because I haven't looked into whether optical mouses can reliably read patterns on a piece of paper. If the key pattern can be printed on regular papers, then keys can be sent electronically. If not, then a special printing process may enhance security.
A special mouse driver will be necessary, of course, and unubiquitous availability of optical mouse makes deployment impractical but I thought the idea was interesting enough to share.