[Phil] decided he would rather ditch the fob altogether and instead implemented a passive Bluetooth keyless entry system with his Android phone. It’s probably unlikely for car manufacturers to ...

Most modern systems also include keyless entry, allowing you to enter the car without inserting a key or hitting a button on the fob. The newest systems take entry and ignition a step further.

Most cars sold today have keyless entry. But what are you supposed to do when the battery in your fob dies? This mechanic has a method.