Identifying missed electronic check-ins and crediting missed check-ins to members of a social network by utilizing transaction data from an intermediate computer other than a computer of the social network. Missed check-ins are identified using transaction data resulting from an activity of the member at a check-in location, e.g., when the member purchased an item from a merchant at a check-in location or made a call from the location. Transaction data is sent from a computer that stores the data to the social network computer that manages check-ins. Transaction location is compared with check-in locations to determine whether the member should receive credit for the missed check-in, which may count towards rewards or benefits of the social network even though the member is not currently at the check-in location since the missed check-in is validated by a trusted source of transaction data.