https://community.squareup.com/t5/Archived-Discussions-Read-Only/My-clients-are-required-to-enter-a-valid-credit-card-number-when/m-p/68778#M46716 <P>My clients are required to put a valid credit card number on file when they book appointments online. Then after the appointment, I charge their card through Square. My question is this: Since they must re-enter a credit card number every time they book an appointment, sometimes the same client may choose to use a different card than they used when booking their last appointment. When I go to charge the card on file, there are two. How do I know which card is the most recent card they entered? I want to make sure I am charging the right one.&nbsp;</P> Wed, 31 Jan 2018 00:29:20 GMT Ddumond 2018-01-31T00:29:20Z https://community.squareup.com/t5/Archived-Discussions-Read-Only/My-clients-are-required-to-enter-a-valid-credit-card-number-when/m-p/68778#M46716 <P>My clients are required to put a valid credit card number on file when they book appointments online. Then after the appointment, I charge their card through Square. My question is this: Since they must re-enter a credit card number every time they book an appointment, sometimes the same client may choose to use a different card than they used when booking their last appointment. When I go to charge the card on file, there are two. How do I know which card is the most recent card they entered? I want to make sure I am charging the right one.&nbsp;</P> Wed, 31 Jan 2018 00:29:20 GMT https://community.squareup.com/t5/Archived-Discussions-Read-Only/My-clients-are-required-to-enter-a-valid-credit-card-number-when/m-p/68778#M46716 Ddumond 2018-01-31T00:29:20Z https://community.squareup.com/t5/Archived-Discussions-Read-Only/My-clients-are-required-to-enter-a-valid-credit-card-number-when/m-p/68955#M46717 <P>Hi&nbsp;<a href="https://community.squareup.com/t5/user/viewprofilepage/user-id/93657">@Ddumond</a>&nbsp;- Do you charge the card while the customer is present (in person)? I think best practice in this type of situation is to confirm the last 4 digits of the card with the customer before charging. I know a lot of service businesses do this, but maybe some other service/appointment based business owners can weigh in!</P> Wed, 31 Jan 2018 23:31:17 GMT https://community.squareup.com/t5/Archived-Discussions-Read-Only/My-clients-are-required-to-enter-a-valid-credit-card-number-when/m-p/68955#M46717 katieand 2018-01-31T23:31:17Z