Simple household hacks are fun — and some actually work. One of the most talked-about low-effort tricks you’ll see floating around is taping a small piece of aluminum foil to a door handle (or door knob) before you leave the house. It sounds odd, but there’s a practical idea behind it: a cheap, easy tamper indicator that helps you tell whether someone opened your door while you were gone.
Here’s what the trick is, why people use it, how to set it up, and — importantly — when not to rely on it.
🔧 What the Trick Is (and How to Do It)
How to set it up:
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Tear or cut a small square of aluminum foil.
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Fold it once or twice so it’s slightly thicker and easier to handle.
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Wrap it around the base of the door handle or over the seam where the knob meets the door — enough that removing or unwrapping it would be noticeable.
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Secure the foil with a strip of tape so it stays in place. Don’t tape so much that the tape itself is the only thing holding it — you want the foil to be obvious if disturbed.
How to check: When you return, look at the foil. If it’s torn, crumpled, missing, or the tape has been disturbed, that’s a sign the door handle was touched or the door opened.
✅ Why People Use It
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