Fingerprint reader on Windows 7

I upgraded my work laptop with Windows 7 a month or two ago (and I love it!) and most things are going smoothly.  But one feature I’m loving a lot is the ability to swipe my finger across the fingerprint reader built into my Lenovo X60 TabletPC.  That reader has been there when I was on Vista too, of course, but I enabled it in Windows 7 and it’s surprisingly useful.  I rarely if ever enter my password anymore:  just swipe and go.  It misses a few times, apparently depending on how warm or sweaty my thumb happens to be, but even if I have to swipe an extra time or two, it’s still much faster getting logged in than if I have to type a password. Very nice!