Abstract: A method of conducting a transaction between a merchant Point of Sale system (POS) and a customer device is presented. The method entails activating a web portal in response to activation of a button on the merchant POS, retrieving a list of open tabs created by customer devices that checked in, each of the open tabs being associated with a customer, receiving, from the merchant POS, a ticket ID of a ticket that is currently open on the merchant POS, presenting the list of open tabs on the merchant POS via the web portal, receiving a customer selection from the merchant POS, the selected customer being one from the list of open tabs, and associating the ticket ID with information for the selected customer.

Abstract: A method of conducting a transaction between a merchant Point of Sale system (POS) and a customer device is presented. The method entails obtaining a ticket directly from the merchant POS via a plug-in application, the ticket including a merchant identification, a customer identification, ordered items, and prices of the ordered items; activating a web portal to interface the customer device; reporting ordered items and prices to the client device, and receiving payment authorization from the customer device; generating a login token via a payment engine to contact a gateway to a financial transaction site; and in response to receiving authorization from the gateway, contacting the merchant POS to complete the transaction.

Abstract: A method of conducting transactions between a customer device and a merchant device is presented. The method entails receiving login information from the customer device at a merchant venue, assigning a ticket to the customer device, receiving, from a merchant device, a predetermined amount of currency associated with the customer device, associating the predetermined amount of currency with the ticket, receiving, from the customer device, an approval to carry out a financial transaction for at least the predetermined amount of currency using a payment card number, and receiving, from a gateway, a notification that the financial transaction is completed using the payment card number.