More likely explanations are far less sinister:
In most cases, a penny in the door is just a quirky coincidence — not a crime in progress.
🛡️ Real Car Theft Risks You Should Know About
While the “penny trick” is likely overblown, real threats do exist — especially for modern vehicles.
1. Relay Theft (Keyless Entry Hacking)
- Thieves use devices to capture signals from your key fob inside your home
- They amplify the signal to unlock and start your car — no breaking needed
- Targets cars with push-button start and proximity keys
âś… Prevention tips:
- Store your key fob in a signal-blocking pouch (Faraday bag)
- Keep it away from doors/windows at night
- Use steering wheel locks or garage storage when possible
2. Sliding Window Break-Ins
- Criminals use thin tools to slide open slightly open windows or pop door seals
- Common in older cars or parked in isolated areas
âś… Always double-check windows are fully closed.