Say I have written an app. I would now like the raspberry pi to start up and go straight into that app, give the user no options to do anything on the raspberry pi's OS etc. or break out of it. I don't even want the user to see the GUI of Raspbian.
So, I want it to look like the pi is solely running this one software I wrote, similar to when one starts up a Gameboy or XMBC or Retropi.
1) How this sort of functionality called? (I only found startup scripts & crontab stuff when I googled this, but this is not what I mean)
I hope this question is not too stupid or that I missed anything! Would be really grateful for some advice!