Using a smartphone as a car key for your Tesla has many perks. It means one less thing to carry around and lets you conveniently unlock your car, hop in, and drive without ever turning a key ...

A new relay attack has demonstrated that Tesla vehicles can be stolen with a quick hack, but thieves need to work in pairs and get as close as two inches from your phone or key card.

Using a smartphone as a car key for your Tesla has many perks. It means one less thing to carry around and lets you conveniently unlock your car, hop in, and drive without ever turning a key.