Why is a metal detector illegal?
"Officer, this equipment is for detecting needles in the Geneva playground".
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.
Actual metal detectors can detect gold a meter down through mineralized soil with metal scrap in between.
This is HN, most discussions around laws fail to consider the legal context and practices, especially as it relates to (in general) Europe
Instead, people here think you can "Bazinga" the law to a judge and that GDPR enforcement will drone them if their website don't have a popup.