If it's going in your Google wallet or whatever, then you can register a card on multiple phones at the moment, so there's no reason why you wouldn't be able to do the same with a season ticket.
People are reading a hell of a lot more into this than there really is. Millions of people have all sorts of payment and loyalty cards on their phones. This is just another, using the same system.
Often, there's just a link to click to install on your phone.
There will always be people who don't like me technology, or have issues for some reason. There will be solutions, they're always is. Blackpool FC is a very inclusive and forward looking organisation. People are stressing out before they even know what the issues are.