So you're running late, your BP is on your Phone which you have to turn off before flight, the line is long and just as you get to TSA BP Check your battery dies. Go back to the counter and get a paper pass? You just missed your flight. No thanks to Living Electronically on this dumb idea.

Besides, without a paper BP, how can all the TSA Scribblers with highlighters, sharpies and colored pencils circle all those important BP things like your gate and destination city? They'll go postal with nothing to scribble on.