A card must be presented to complete a transaction, either through card swipe on a credit card reader or a manual imprint.
Merchants may require minimum purchase amounts on credit card transactions. The minimum purchase amount must not exceed $10 (or other amounts as set by law), does not apply to transactions made with debit cards and cannot differentiate on the basis of the issuer or payment card network. No maximum amount can be applied to any credit or debit card transactions.
For a complete list of rules and guidelines please visit the links below: