If an officer is having a bad day and taking out on the traveller, you can actually report that dumb moronic behavior to their supervisor, who will then scold them into place because true Thai culture is about respect. I've done it before, and I will do it again every time I encounter that nonsense.
Wrong. Printing it is retarded boomer mentality. An inefficient, unnecessary waste of paper. I got through just fine showing the digital one. They have to scan the barcode digitally anyway.