According to the team, the Tesla Model S key fobs send out an encrypted signal, based on a cryptographic key, to a vehicle's radio system in order to initiate the lock/unlock process.

YouTube DIY'er Zack Nelson hacks open the Model 3's key card in search of a better form factor for the RFID chip.

The same researchers who figured out how to clone a Tesla Model S key fob have done it again, cracking the replacement that was meant to fix the problem.

Weak encryption in Tesla Model S key fobs allowed all-too-easy theft, but you can set a PIN code on your Tesla to protect it.