US Patent 8965791 Quick legend receipt system

Techniques are disclosed for enabling more efficient tipping by enabling a merchant to customize sales receipts for customers. The generated receipts may have a quick legend section. In one embodiment, a method includes automatically determining, based on one or more rules, an algorithm by which a plurality of selectable tip options for a transaction are to be calculated. The method further includes calculating, according to the algorithm, the plurality of selectable tip options for inclusion in a section of a transaction receipt for a transaction, generating the section on the transaction receipt, and enabling a user to configure the one or more rules so as to adjust how the algorithm is determined and how each of the selectable tip options is calculated under the algorithm. Among other benefits, the disclosed techniques increase the efficiency in tipping, reduce the chances for error, and enable a better overall shopping experience.