CU Denver Professor Finds Solution to Car Theft

Seems like 2fa for cars. If the 2 factors are:

1. Something you have 2. Something you know

For the web, "something we know" is a password, so we've implemented something you have (e.g., a shared secret stored on a physical device).

For cars, "something you have" is a key. This system seems to implement the "something you know" part via entering a startup sequence (afaict).

Simpler solution - remove the fuse for your fuel pump. No one will ever figure that one out