All you need is a roll of regular aluminum foil from your kitchen.
Wrap the Keys:
Take a sufficient amount of foil and wrap your key fob completely, ensuring there are no gaps.
Test It Out:
Once wrapped, test the key fob near your car to see if the doors still unlock. If they don’t, you’ve done it right.
Consider a More Permanent Solution:
If wrapping and unwrapping your keys in foil every day seems tedious, consider investing in a specially designed signal-blocking pouch, often called a Faraday bag, which offers the same protection but is more durable and user-friendly.