Multi-merchant concomitant-use point-of-sale device

A method comprising:

• receiving, by a computing device associated with a payment service and from a point-of-sale (POS) device associated with a first merchant and a second merchant, and via a first merchant account of the first merchant, an indication of a first period of time during which the first merchant offers first merchant items for purchase, wherein the first merchant, the second merchant, and the POS device are in a common physical establishment;
• receiving, by the computing device and from the POS device via a second merchant account of the second merchant, an indication of a second period of time during which the second merchant offers second merchant items for purchase;
• determining, by the computing device and based at least in part on the first period of time and the second period of time, a portion of the first period of time exclusive of the second period of time;
• providing access, by the computing device, to the second merchant items via the first merchant account on the POS device during the portion of the first period of time, wherein providing access to the second merchant items enables the first merchant to offer the second merchant items for purchase on behalf of the second merchant during the portion of the first period of time;
• receiving, from the POS device, a request to authorize a transaction for a purchase of an item by a customer from the first merchant;
• determining that the item is one of the second merchant items, and that a time of the request is during the portion of the first period of time;
• and
• based at least in part on determining that the item is one of the second merchant items, and that the time of the request is during the portion of the first period of time, facilitating the transaction between the first merchant and the customer.

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

• receiving, by the computing device associated with a payment service and from a point-of-sale (POS) device associated with a first merchant and a second merchant, and via a first merchant account of the first merchant, an indication of a first period of time during which the first merchant offers first merchant items for purchase, wherein the first merchant, the second merchant, and the POS device are in a common physical establishment;
• receiving, by the computing device and from the POS device via a second merchant account of the second merchant, an indication of a second period of time during which the second merchant offers second merchant items for purchase;
• determining, by the computing device and based at least in part on the first period of time and the second period of time, a portion of the first period of time exclusive of the second period of time;
• providing access, by the computing device, to the second merchant items via the first merchant account on the POS device during the portion of the first period of time, wherein providing access to the second merchant items enables the first merchant to offer the second merchant items for purchase on behalf of the second merchant during the portion of the first period of time;
• receiving, from the POS device, a request to authorize a transaction for a purchase of an item by a customer from the first merchant;
• determining that the item is one of the second merchant items, and that a time of the request is during the portion of the first period of time;
• and
• based at least in part on determining that the item is one of the second merchant items, and that the time of the request is during the portion of the first period of time, facilitating the transaction between the first merchant and the customer.