It only takes a few minutes to become a member of Gamstop, but it can take approximately 24 hours for your self-exclusion to become effective at all member casinos.Your initial registration and the updating of your details at any time are free.You will need your postcode, date of birth and email address and then follow the simple instructions on the Gamstop site. Once you log on to the site, you will have to provide certain details so that Gamstop can confirm your identity.