It is possible to buy a SIM online, then register it at home using the service provider's app.

https://www.ais.th/one-2-call/howto_.../en/index.html


And I've purchased SIMs in shops using a copy of my passport.

Been like that for years.

The 7/11 mini-general was all attitude, which I accepted with the full fake Thai smile, head bow and mai bpen rai. I did not make a scene, I apologized for not my having my passport, and everyone was smiling.

But thanks for the useless and silly observations.