@the_rail_life @ThermiteBeGiants @arfman @ajsadauskas @AussieWirraway
This is good - see also the massive nationwide felica based system in japan - this has mobile apps, supports season tickets, not so good on area passes and capping though. I have a mobile Suica on my phone that I can reload from ApplePay, super convenient.
Fundamentally though, for the vast majority of users a tap and go (eftpos, CC) payment system, based around payment cards is the best way. London gets this mostly right with daily weekly and monthly caps tied to a payment card - no need to buy a pass, it just tops charging you once you hit the right level in a time period.
Once you have that you just need to provide for concessions, and people who don’t want to use an existing payment card (inc tourists who may incur foreign transaction fees). Concessions could be tied to a cc number and you could have a reloadable money card for the rest.
It’s a payment system so use the payment systems that exist and build off them.