Biometrics creep me out

So I got my Discover Card "don't forget to charge a lot this season" magazine this week, and it features a story on Pay by Touch, a company that is apparently installing finger print reading machines in retail locations so that customers don't have to deal with the hassle of lugging around those cumbersome credit cards. Am I wrong to be creeped out by this? Is it just because I'm a luddite who doesn't want my flesh associated with my finances? I don't know, but it does give me the willies.