I recently went to use my Rabbit card and was told it needed renewing. I protested (politely) that it was barely a year since I renewed it after it's 7 year validity expired. "Oh, it's all changed now -- renewal is annually".
Oh shit I thought, I'd renewed my passport since then and NEVER carry the original with me.
Luckily I had tatty B/W copies of new and old with me --- and they sufficed.
This was at Saphan Thaksin skytrain station.
I've recently read that 'soon' all ticketing will be combined skytrain/subway/busses and only via a phone app. No more physical tickets!
But then, how many years have I been reading this in the local press?