Absolutely! You would need a complete system that was self contained. You need a processor, memory, the reader (duh) and a way to link it to the car electrical. You might be able to find one online. Look into security systems. I would replace the key lock with a standard rotatable unlocked switch since the ignition lock has other functions other than just keeping the car from starting and it would be more difficult to implement them into the scanner. THen just insert the scanner into the ignition system control so that I would prevent the car from starting. While this might sound like a "cool" project to build and have, I've not found finger scanners to be very user friendly. My laptop has one and if you don't scan your finger just right it won't work so I don't use it. I find it frustrating.