script for detecting unauthorized 433 mhz device usage

[alttab]

I would like to be able to see 'unauthorized usage' of 433 mhz devices.
With unauthorized i mean: devices that got switched from outside domoticz. I want to receive an alert when this happens.
In theory this should easily be possible.

Hower i don't know if it is allready possible in the current domoticz with the help of lua and (for instance) user variables?
Anyone allready figured this out?