Cheers. I had to do that when I registered for YouBike.
It’s very easy. Just go to the website for whichever card you use. If you use YouBike you probably already did. Unless I miss something, it’s just registering your card with your name and phone number.
I hope all or most. Several major ones have their own system that’s more cumbersome than writing your name on a paper.
I don’t think you can on the English site, but you can in English though a YouBike kiosk. This video shows is about a year old, but walks you through it.
