Finding a coin wedged into your car’s door handle can be unsettling. For years, stories online have claimed that thieves use a “penny trick” to stop a vehicle from locking properly. The idea is that a penny or nickel placed near the handle could interfere with the lock, leaving one door unsecured after the driver walks away.

However, this claim is often exaggerated. Most modern vehicles use electronic central-locking systems that operate separately from the exterior door handle. Some cars can even alert the driver when a door has not locked correctly. So, finding a coin does not automatically mean someone was trying to break into your vehicle.

Still, an unfamiliar object on your car should not simply be ignored. It could be a prank, a coincidence, or an attempt to distract you. Someone could potentially use the situation to approach you while you are focused on examining the vehicle, particularly in a crowded or isolated parking area.

If you discover a coin or another strange object on your car, stay aware of your surroundings. Rather than standing there investigating, get inside, lock the doors, and move somewhere safe and well-lit. Once you are in a secure location, check that every door is properly locked and look for other signs of tampering.

The viral “penny lock trick” may not work on most modern cars as people often claim, but the safest response is still simple: remain cautious. An unusual object does not prove that a crime was attempted, yet it is always better to check your vehicle and surroundings carefully than to ignore something that seems out of place.