Quote Originally Posted by adrianh View Post
Some companies take all ten prints and ask for a specific one at random...
That makes the cardinality 10 ... with a very "insecure" password of 3 letters all upper-case alphabetical the cardinality is 26 x 26 x 26 = 17576. So then someone just has to go to the tread-mill you've just finished with at the gym and they've got all 10 your "passwords". Even if they then figure out that someone screwed up by not noticing which finger went where - and they tried all 10 ... it's still impossible for YOU to change those.

Quote Originally Posted by Justloadit View Post
What they are not considering, is that a number of the population will have a huge problem being identified, as their finger prints on many occasions are worn down by the kinda work they do. One which immediately comes to mind is brick layers, the handling of bricks acts like sand paper on the fingers. Also many of the other manual type of work, which requires the handling of material will also affect the finger prints.
Very good point also! I had this with a clock-in system at work. Was doing some house repairs over a weekend and on Monday the reader wouldn't accept my print.