this post was submitted on 19 Mar 2026
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But does it work with the foil? We found lots of metal containers didn't block the signal. Hell even a pouch advertised to do it still worked.
Thick metal containers with over lapping lids worked best.
I tested with bolt EV, 2019?, model, because while the keys are in my house they would still allow kryless start to my car in the driveway. 2 layers of crumpled aluminum foil worked to fix it from ~15 feet away
Heavy duty Reynolds wrap. Fold to desired thickness and you have to wrap it fully without gaps. You're tying to contain light.
Metal wraps stops signals coming in, not going out.