wsr523
Registered
SSI cards (except Advanced Open Water and Master Diver) have a six digit number in the online diver verification section. According to the SSI website that six digit number is my diver ID. I assume the 20 digit plus ID number identifies the course I took and not me.
Thanks CryHavoc. Before my LDS that I got certified at went out of business they always said that the long ID number was what I should use but it makes more sense to use the online verification number.