A lot more people most live really easy and uncomplicated lives than I realised if they find pressing a few buttons on a phone and carrying ID on them a complicated and an arduous burden.
Whilst I can believe a lot of this scenario to say he's "never been on a train in his life" is just the lie that takes it too far.
And like everyone says: your "friend" can phone the club to ask the question. Or has this "friend" also never used a phone in their life?
Having bought a ticket this morning for one of the early season matches the process does say you need to bring photo ID that matches the name on the ticket. So the club have put this policy in place already. Like you I don't see it as an issue for the vast majority of people.
I just bought a ticket this morning and in the "fulfilment" screen it gives (the sole) option of mobile ticket then there is a drop down menu which includes your email address and every email address of those on your friends and family list. Get it emailed to yourself then forward it on to him.