Alarmo + Adonno Tag Reader = Good idea?

Hey there, I’m pretty new to the world of home assitant. So far I’m very impressed with the systems capabilities.
The first more complex thing I try to set up, is Alarmo. Using the app, it is very confinement to arm and disarm alarms, but I also need the option for non app registered users to arm and disarm the alarm.
I was wondering if a RFID Chip would be a good idea? It’s very easy to setup. However, I have no idea if this is secure in any way, or how the Chip must be setup, in order to make it secure. With secure I mean, that it can’t be (easily) copied.
I also tried my cell phone, but the id that is scanned changes with every scan, so i guees, a phone can’t be used with the tagreader, to trigger an event?

Any thoughts and pointers are greatly welcome.
-Toby