Point-of-sale state control terminals

One or more non-transitory computer-readable media storing instructions executable by one or more processors that, when executed by the one or more processors, cause the one or more processors to perform acts comprising:

• receiving, via a merchant terminal of a merchant or a customer terminal of a first customer, one or more first inputs associated with a first point-of-sale (POS) transaction between the merchant and the first customer;
• responsive at least in part to, and based at least in part on, the one or more first inputs, determining that the first POS transaction is in a first item-input portion;
• based at least in part on determining that the first POS transaction is in the first item-input portion, designating the merchant terminal as a state control terminal with respect to the first POS transaction and designating the customer terminal as a non-control terminal with respect to the first POS transaction, wherein the state control terminal has control of a state of the first POS transaction;
• determining that a trigger event associated with the first POS transaction has occurred;
• based at least in part on the determining that the trigger event has occurred, determining that the first POS transaction is in a payment-input portion;
• based at least in part on determining that the first POS transaction is in the payment-input portion, designating the customer terminal as the state control terminal with respect to the first POS transaction;
• prior to receiving payment input for the first POS transaction and while the customer terminal is the state control terminal with respect to the first POS transaction, receiving, via the merchant terminal, one or more second inputs associated with a second POS transaction between the merchant and a second customer;
• responsive at least in part to, and based at least in part on, the one or more second inputs, determining that the second POS transaction is in a second-transaction item-input portion;
• and
• based on a signal indicating completion of the payment-input portion of the first POS transaction, designating the merchant terminal as the state control terminal with respect to the first POS transaction.

A system comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media storing instructions executable by the one or more processors, wherein the instructions cause the one or more processors to perform acts comprising:
• receiving, via a merchant terminal of a merchant or a customer terminal of a first customer, one or more first inputs associated with a first point-of-sale (POS) transaction between the merchant and the first customer;
• responsive at least in part to, and based at least in part on, the one or more first inputs, determining that the first POS transaction is in a first item-input portion;
• based at least in part on determining that the first POS transaction is in the first item-input portion, designating the merchant terminal as a state control terminal with respect to the first POS transaction and designating the customer terminal as a non-control terminal with respect to the first POS transaction, wherein the state control terminal has control of a state of the first POS transaction;
• determining that a trigger event associated with the first POS transaction has occurred;
• based at least in part on the determining that the trigger event has occurred, determining that the first POS transaction is in a payment-input portion;
• based at least in part on determining that the first POS transaction is in the payment-input portion, designating the customer terminal as the state control terminal with respect to the first POS transaction;
• prior to receiving payment input for the first POS transaction and while the customer terminal is the state control terminal with respect to the first POS transaction, receiving, via the merchant terminal, one or more second inputs associated with a second POS transaction between the merchant and a second customer;
• responsive at least in part to, and based at least in part on, the one or more second inputs, determining that the second POS transaction is in a second-transaction item-input portion;
• and
• based on a signal indicating completion of the payment-input portion of the first POS transaction, designating the merchant terminal as the state control terminal with respect to the first POS transaction.