On 23/12/2017 21:51, JoeJoe wrote:
I have 2 Samsung tablets.

I would like them to be limited to one task only, namely, run a single
(interactive) app that I have on them.

Ideally, I would like the tablets to start with this app when turned on,
and not allow the user to do anything else but use the app.

Is that possible?Â* Couldn't find how to do anything even close to this
online...

https://developer.android.com/work/cosu.html

Google "android kiosk"