Repeated from Microsoft Insider Update November 2004:

How would you like to eliminate the hassle of having to remember passwords for your favourite websites? Microsoft has come up with an ingenious new solution: the Fingerprint Reader. It scans and remembers your unique fingerprint patterns, allowing you to replace passwords simply by touching a sensor on your keyboard, mouse or a standalone device. Read our latest article to discover more, or visit the Microsoft hardware site to see the new Fingerprint Reader products.

Read the article on Fingerprint Readers

Discover more about new Fingerprint Reader products (the UK version).

I think this sort of thing has got to come -- but it presumes that the corresponding passwords are really secure...