In this subchapter:
(1) "Check" means an instrument signed by the maker, containing an unconditional promise or order to pay a sum certain in money, containing no other promise, order, obligation, or power given by the maker, payable on demand, and drawn on a bank.
(2) "Credit card invoice" means the document authorized by the holder of a credit card to be used to provide payment of an amount from the holder's credit card account.
(3) "Maker" means the drawer of a check or the holder of a credit card who authorizes a credit card invoice.
(4) "Payment by electronic means" means payment by telephone or computer but does not include payment in person or by mail.