The Trick Using Aluminum Foil on Door Handles

Why Do People Wrap Aluminum Foil Around Door Handles?

There are three main reasons this trick is often recommended:

1. Home Security Awareness

One popular claim is that wrapping aluminum foil around a door handle can serve as a basic, low-tech alert system. The idea is simple: if someone attempts to tamper with the handle while you’re inside, the foil will crinkle and make noise. That sound could potentially alert you to movement at the door.

While this isn’t a substitute for proper security systems, cameras, or reinforced locks, some people like the added peace of mind—especially at night.