Ever heard of the principle of "good faith" in the context of the Swiss law (Article 2 of the Civil Code)?

Sometimes I think it was a prescient concept of our law makers and judiciary, many decades ago they knew they would have to deal with this kind of reddit-tier smartassery... if you have a device to detect metal, and you use it to detect metal, it is a metal detector, no judge will give you a pass because you thought you were very clever.