Thieves use signal relay attacks to steal cars by amplifying key fob signals from inside homes.

Key fobs can be exploited by thieves using signal relay attacks, where devices amplify the fob’s signal from inside a home to unlock and start a car parked outside. This method bypasses traditional security, allowing unauthorized access even if the fob is not physically taken. Experts recommend using signal-blocking pouches or storing fobs in metal containers to prevent such thefts.