In my early career NZ traffic cops used to walk around with a Bluetooth printer strapped to their belt, that would print the tickets. I purchased a long range

In my early career NZ traffic cops used to walk around with a Bluetooth printer strapped to their belt, that would print the tickets. I purchased a long range (I think 400m) Bluetooth dongle and with a bit of bash scripting we could continuously sweep the local area and then go out and move our cars, we tried pairing to the printers too but they had passkeys and we couldn’t, but they still had whatever broadcasting was active so we could at least detect them.