Method for conducting a transaction

A merchant device for conducting a transaction between a merchant and a customer, the merchant device configured to:

• broadcast information identifying the merchant device to a customer device while the merchant device and the customer device are both located at a physical merchant location to cause the broadcast information to be displayed on the customer device, wherein the merchant device includes one or more point of sale (POS) terminals;
• receive, from the customer device, a connection request to initiate a connection between the merchant device and the customer device;
• in response to the received connection request, exchange encryption keys with the customer device to establish a secure wireless channel between the merchant device and the customer device;
• receive, over the secure wireless channel, a check-in request from the customer device, the check-in request including information identifying the customer;
• prompt the merchant to accept the check-in request by displaying a message on the merchant device;
• accept the check-in request based on an input made by the merchant on the merchant device in response to the displayed message;
• generate, as a result of acceptance of the check-in request, cart information of the customer, the cart information generated based on data inputted by the merchant into the merchant device, the cart information representing details of items being purchased;
• transmit, by the merchant device, the cart information to the customer device to cause the cart information to be displayed on the customer device prior to initiating a payment process for the items and while the customer device is located at the physical merchant location, and to cause the cart information to be synchronized in real-time between the merchant device and the customer device while the customer is present at the physical merchant location;
• send, from the merchant device, a cart update to the customer device, wherein the cart update corrects an error in the cart information, the error caused by at least one of a duplicate entry of an item and an erroneous entry of an item entered by the merchant;
• receive, at the merchant device from the customer device, a cart update acknowledgement indicating that the cart information was corrected on the customer device;
• receive, from the customer device at the merchant device, a cart lock request generated at the customer device such that the merchant device temporarily stops the real-time synchronization of the cart information between the merchant device and the customer device;
• transmit, in response to temporarily stopping the real-time synchronization, a cart lock acknowledgement from the merchant device to the customer device;
• receive, from the customer device at the merchant device, a cart update, wherein the cart update indicates an addition or removal of an item from the cart information;
• send, from the merchant device to the customer device, a cart update acknowledgement;
• receive, from the customer device at the merchant device, a cart unlock confirmation generated at the customer device;
• resume, by the merchant device, the real-time synchronization of the cart information in response to the cart unlock confirmation received from the customer device;
• determine, via the secure wireless channel, at least one payment option for checking out the items corresponding to the cart information;
• and
• facilitate, over the secure wireless channel established between the merchant device and the customer device, processing of a payment associated with the cart information based on a selected payment option out of the at least one payment option.

A computer storage medium having stored thereon computer code means to instruct a merchant device to execute a method for conducting a transaction between a merchant and a customer, the method comprising:

• broadcasting, from the merchant device to a customer device, information identifying the merchant device while the merchant device and the customer device are both located at a physical merchant location to cause the broadcast information to be displayed on the customer device, wherein the merchant device includes one or more point of sale (POS) terminals;
• receiving, at the merchant device from the customer device, a connection request to initiate a connection between the merchant device and the customer device;
• in response to the received connection request, exchanging encryption keys between the merchant device and the customer device to establish a secure wireless channel between the merchant device and the customer device;
• receiving, over the secure wireless channel, at the merchant device, a check-in request from the customer device, the check-in request including information identifying the customer;
• prompting the merchant to accept the check-in request by displaying a message on the merchant device;
• accepting, at the merchant device, the check-in request based on an input made by the merchant on the merchant device in response to the displayed message;
• generating, as a result of acceptance of the check-in request, cart information of the customer at the merchant device, the cart information generated based on data inputted by the merchant into the merchant device, the cart information representing details of items being purchased;
• transmitting, by the merchant device, the cart information to the customer device to cause the cart information to be displayed on the customer device prior to initiating a payment process for the items and while the customer device is located at the physical merchant location, and to cause the cart information to be synchronized in real-time between the merchant device and the customer device while the customer is present at the physical merchant location;
• sending, from the merchant device, a cart update to the customer device, wherein the cart update corrects an error in the cart information, the error caused by at least one of a duplicate entry of an item and an erroneous entry of an item entered by the merchant;
• receiving, at the merchant device from the customer device, a cart update acknowledgement indicating that the cart information was corrected on the customer device;
• receiving, from the customer device at the merchant device, a cart lock request generated at the customer device such that the merchant device temporarily stops the real-time synchronization of the cart information between the merchant device and the customer device;
• transmitting, in response to temporarily stopping the real-time synchronization, a cart lock acknowledgement from the merchant device to the customer device;
• receiving, from the customer device at the merchant device, a cart update, wherein the cart update indicates an addition or removal of an item from the cart information;
• sending, from the merchant device to the customer device, a cart update acknowledgement;
• receiving, from the customer device at the merchant device, a cart unlock confirmation generated at the customer device;
• resuming, by the merchant device, the real-time synchronization of the cart information in response to the cart unlock confirmation received from the customer device;
• determining, via the secure wireless channel, at least one payment option for checking out the items corresponding to the cart information;
• and
• processing, over the secure wireless channel established between the merchant device and the customer device, a payment associated with the cart information based on a selected payment option out of the at least one payment option.