user59644: Is it possible to salvage a fingerprint scanner from an old and dead smartphone and use it with Arduino? I am not talking about writing an android program and send data to Arduino over Bluetooth or WiFi, I am talking about wiring up fingerprint scanner of a mobile phone to Arduino.

user313: Long-shot, but if the phone is still functional enough to unlock with a fingerprint, try sensing the overall screen brightness when locked and when unlocked, and use that as the "Fingerprint matched" signal. Obviously this won't work with a truly dead phone.
A lot of processing goes into reading and storing or matching a finger-print. The magic is in the software, not (only in) the sensor. An Arduino (Uno class or similar) is way under-powered for the task. Perhaps one of the Arm- or other high-end Arduinos would have the capability if you had or could write the necessary software.
Short answer: No.

59644: <p>Is it possible to salvage a fingerprint scanner from an old and dead smartphone and use it with Arduino? I am not talking about writing an android program and send data to Arduino over Bluetooth or WiFi, I am talking about wiring up fingerprint scanner of a mobile phone to Arduino.</p>
 313: <p>Long-shot, but if the phone is still functional enough to unlock with a fingerprint, try sensing the overall screen brightness when locked and when unlocked, and use that as the "Fingerprint matched" signal. Obviously this won't work with a truly dead phone.</p>

<p>A <em>lot</em> of processing goes into reading and storing or matching a finger-print. The magic is in the software, not (only in) the sensor. An Arduino (Uno class or similar) is way under-powered for the task. Perhaps one of the Arm- or other high-end Arduinos would have the capability if you had or could write the necessary software.</p>

<p>Short answer: No.</p>
