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What This Trick Can’t Do
It’s important to remember that wrapping foil around a doorknob isn’t going to stop someone from entering your home. It’s not a security device. However, it can provide a small deterrent or indicator — and sometimes that’s enough to give you an edge.
If you’re concerned about home security, consider pairing this method with:
- Motion-sensor lights
- Smart doorbell cameras
- Deadbolt locks
- Alarm systems
Final Thoughts
Aluminum foil is more versatile than we give it credit for — and using it on your door knobs is just another clever way to make your home a little safer and smarter. Whether you’re monitoring for tampering, protecting hardware while painting, or adding a layer of hygiene awareness, this quick trick can be surprisingly useful.
