A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
OP's son could be an airline or airport employee and use that ID to get through TSA security. However, the fact that he does check in suggests that the boarding pass is on the phone and he just means that he doesn't deal with printed boarding passes.