I have created a working device handler for the Zipato (a.k.a. Benext / Wintop) RFID tag reader.
After a few bug fixes, it’s working well for me, and finally allows me to give house guests a way to disarm the security system (and allows me to disarm it if my phone is out of juice).
The device looks like a switch on your network (home=off, away=on), which allows you to automate against it with routines and SmartApps. You can register 9 RFID tags or user codes by default, and can expand this up to 255 if you want to edit the device handler.
I have set it up against my home & away routines so that when the away routine is automatically performed when the device turns “on”, and the “home” routine is automatically performed when it is turned “off”. In addition, to ensure that other home/away routines keep the keypad state in sync, I have set up the “away” routine to switch the device “on”, and for the “home” routine to switch it off. It works seamlessly. I hope others enjoy.