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
A couple months ago, USA citizens in front me entering Argentina at EZE were asked to show their itineraries, ticket receipts, and hotel reservation confirmations.
I carry printouts because electronic devices can be lost/stolen, get dead batteries, or otherwise malfunction. A few pieces of paper aren't a lot to carry just in case.