[ddtaylor]

Seems like it will cause me to get stuck at an airport or train station while an employee tells me about the virtues of an app.

[jazzyjackson]

This is a possibility, but so far the only public place I've found lacking any paper backup has been ticketmaster music venues

And malls that replaced their maps/hours with QR codes but this seems to be a California thing so can be avoided by not being Californian