I have a related concerns about customer protection, maybe someone knows about it and can tell me: the famous Chinese bike-sharing companies are now coming everywhere in US & Europe. How "dangerous" (at least privacy-wise) is it to use them (i.e. give them your contact and bank data)?
I signed up a couple of weeks ago to Mobike, and so far it's worked well. I've given them my credit card details, which should provide me with some protection. If I was really paranoid I'd use a prepaid card like my Monzo card.
At some point I'll look at what data it is sending out, and how often. Many people have Chinese apps on their phones as many utilities in the Play store originate there. If you watch where they're communicating to you can see that it is Beijing. Just as most apps talk to various servers in the US.