Remote control to Arm Disarm

Hi Guys.
Im looking for a simple remote with 2-4 buttons that is not easyly pressed when in a pocket.
It is a remote a friend should have to activate a few flows when outside the house to be able to get in.
I was looking at the Nedis SmartLife Remote Control ZBRC10WT that used to work with Homey as it would be perfect for the job.

So my question is, any suggestions to something i can use as a remote that is not to big, and only with a few buttons to arm and disarm ?
Yes i could make a guest account for the user, but i do not want the user to have access to all devices and flows.

I use the Fibaro Fob for that, works well.