Security News > 2020 > April > Talos researchers fabricate a fake that frequently fooled fingerprint locks
Two security researchers used a 3D printer and fabric glue to create a fake fingerprint that fooled authentication sensors 80% of the time.
The biggest challenge was getting the size right for the fake fingerprint; 1 percent too small or too large and the fake fingerprint did not work.
The padlock authentication was fooled more than 80% of the time, but the fake print never worked with the Verbatim Fingerprint Secure and a Lexar Jumpdrive Fingerprint F35. The team tested three types of sensors-capacitive, optical, and ultrasonic.
The team used the mold to cast the fake fingerprint and then used the fake to access a device.
The research team had to print more than 50 molds, create a fake fingerprint with them, and compare the results and sizes with a fingerprint sensor to have a reliable mold and a valid fake fingerprint.