Electronic sales method

An electronic method for completing a sales transaction between a buyer having a smartphone and a seller, the buyer's smartphone having a digital camera function, an interactive display, and applications to enable steps of the method which are carried out at the buyer's smartphone, said method comprising

• a) establishing an amount to be charged for the sales transaction,
• b) optically capturing buyer data from the buyer,
• c) electronically transmitting the buyer data code and the amount to be charged to a remote location,
• d) associating, in an electronic database, the buyer data with contact information for the buyer, wherein the contact information includes the buyer's smartphone number,
• e) transmitting information representative of the amount to be charged to the buyer's smartphone display,
• f) capturing seller data from the seller with the buyer's smartphone camera function,
• g) inputting payment data using the buyer's smartphone display function,
• h) transmitting from the buyer's smartphone, the seller data together with the payment data information to the remote location,
• i) transmitting a payment request from the remote location to a payment center,
• j) receiving approval for the payment request from the payment center, and
• k) transmitting the approval to the buyer's smartphone and to the seller.