Microsoft Fingerprint Reader

So I bought a Microsoft Fingerprint Reader and this thing is stunning. It has reduced the amount of typing I have to do to login, by eight to twenty four characters depending on the site.

One thing I noticed however is that the more fingers I registered with the devise the slower the scanning recognition time is. Plus it doesn't work with FireFox (not without trying however).

I could have just setup the AutoCompleat.. function on IE, but I don't like the idea of my computer entering that information on a website without my interaction.