[replying with bogus account] I spent a few months myself working with a range of low to moderate cost OEM modules (<$200) from several manufacturers and their SDK's and I concur. Not all were easily tricked with a fake print but every device/SDK had some problem. We decided not to include fingerprint recognition as a primary means of authentication in our products. I've heard rumor of a competitor who did include it that actual field performance hasn't met expectations and they're retreating to use it as a secondary means.