> am I required to forget that you came into my store?
No. Your head is not covered by the GDPR. It requires you to not keep a record of all your clients' personal info without a legitimate interest.
There's a Seinfeld episode where Elaine goes to buy a fancy pen at a stationery store which isn't available atm. The clerk asks for her full name and number to notify her (that's a legitimate interest) but then uses it to hit on/stalk her (that would be a GDPR violation). Presumably he also doesn't get rid of the number after their business transaction.
No. Your head is not covered by the GDPR. It requires you to not keep a record of all your clients' personal info without a legitimate interest.
There's a Seinfeld episode where Elaine goes to buy a fancy pen at a stationery store which isn't available atm. The clerk asks for her full name and number to notify her (that's a legitimate interest) but then uses it to hit on/stalk her (that would be a GDPR violation). Presumably he also doesn't get rid of the number after their business transaction.