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How to Test If Your Foil Shield Works
Try this:
- Wrap your key fob in foil
- Stand near your car
- Try unlocking it
If the car doesn’t respond, the signal is blocked.
If it does, add more layers or adjust coverage.
Why Signal Blocking Is Becoming More Important
As cars become:
- More connected
- More automated
- More wireless
Security risks increase.
Manufacturers are improving encryption, but criminals adapt quickly.
Personal habits still matter.
Is This Practice Legal and Safe?
Yes.
Wrapping your own keys in foil:
- Is legal
- Is harmless
- Doesn’t interfere with car systems
It’s simply personal signal management.
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