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Which signals (wifi, mobile phone, gps) can reliably be blocked by tin foil? [closed]

Çağlar Arlı      -    45 Views

Which signals (wifi, mobile phone, gps) can reliably be blocked by tin foil? [closed]

There seems to be conflicting information regarding which signals can be effectively blocked by wrapping the device in tin foil.

Faraday bags exist but they have been shown to be rather expensive and will become unusable after wear and tear. Also most bags do not specify which signals are reliably blocked by the bag.

Tin foil seems a viable alternative but I could not find any reputable source investigating the issue.