For added safety of keyless entry

Keyless entry systems for cars are more convenient as you don't need to carry around a classic car key, but they can also make your car more vulnerable to theft. Photo: dpa

Once upon a time, trying to open the car door with both hands was a nightmare. In the era of keyless entry, it’s simple. The keyless fob in your pocket communicates with the car and opens the door for you.

The technology works by the car sending out a short-range radio signal. If the fob is in range it receives the signal and responds by transmitting a code to the car, which then unlocks the doors.