[wanted] USB (Or other) finger print scanner for free/stupidly cheap!

[shadowx]

Just having a shiny new biometrics system being put in place and the inner geek in me can't sit back and watch! I've already got PHP code that can take a black and white image of a fingerprint, sharpen it up then convert it into a binary string/hash (This is based on the idea of Biostore which turns a fingerprint into a unique and anonymous hash) but now I am in desperate need of a fingerprint reader to pump the image into PHP.

 

Does anyone happen to have one? (pretty please?!) Anything that will pump out an image will be fine even a little finger print usb mouse thingymajig. Happy to pay postage via paypal from my own account but looking for a freebie really otherwise I might as well just buy myself a usb mouse with a reader off amazon or something.