If a printed copy of the e-ticket is allowed, I can always go to a copy store and pay to print it out. Otherwise, I too would be unable to comply without some help configuring my phone to display the document. They need an dedicated cell phone app not a website that produces a file that then needs wifi, and a portable browser to be saved/downloaded and displayed. Entering the requested info on a small cell is very difficult and time consuming with big fingers. This plan like so many others is not well thought out.