Needs some '2FA', like actually putting the key in the ignition. :)
Or a tiny motion sensor in the key, if it's still then don't authenticate.
[Edit:] Suitable sensor, 2012 technology! https://www.eetimes.com/document.asp?doc_id=1317349#
Or a tiny motion sensor in the key, if it's still then don't authenticate.
[Edit:] Suitable sensor, 2012 technology! https://www.eetimes.com/document.asp?doc_id=1317349#
Does the order of the digits shuffle, or does the whole UI element move, or both?
Or use infrared to unlock the car, that requires you to stand next to the car and therefore shielding the device from any leakage :]