It’s called a “relay attack,” and is made possible by a flawed concept: proximity keys.
If your car has doors that unlock and an engine that starts simply with a key being in proximity (meaning, you don’t actually stick the key in the ignition), you could be at risk.
A GIZMODO REPORT claims devices like these can be whipped together with about $20 worth of hardware.
Maybe it’s time to bring back an old school security device???