If you can, Try and talk SMT out of knee jerk ordering these.
This is the usual shit. Sensationalized headlines, everyone jumps on the bandwagon and spends a shit ton of money on gear that no one uses.
We have already said to our SMT we could build these ourselves with a Pi and a few sensors for £50 -£100. The issues is went someone goes to the toilet and finds 20 kids it there, you can't sanction them all you also cant search the kids. So what's the point of having sensors.