This reminds me of IMSI catchers, which governors and mayors don't mind if law enforcement has them, but when your neighbor makes one out of a mail-order kit and a soldering gun then suddenly it's an instrument of terror.

Oh and police aren't supposed to have them in the US, but no one punishes them for using one. It's inadmissible in court, so they have to parallel construct (id est, lie ) about how they got your location from an informant or through detection dogs or something.

In fact, a lot of security is lax, and we don't bother until it's private interests rather than law enforcement that are using them with malicious intent.