I have seen evidence of some scams being run under the guise of KYC in order to gain your passport and government issued id's. Be careful out there and remember that a lot of these coins end up being scams. Do you really want them having your passport/photo identification? This is how people fall victim of identity fraud so please think before sending your information in.
Of course, in this way, fraudsters pretend to be a normal project, and additionally steal your personal data that then goes across the entire network. I prefer not to fall into such traps, and carefully analyze projects.