Abstract: Techniques associated with a customer-facing device and a merchant-facing device are described herein. In an example, a system can include a customer-facing device configured with a customer application that is executable on an operating system of the customer-facing device to (i) display information to a customer and (ii) receive input from the customer, wherein the customer-facing device includes a payment reader to read payment data from a payment instrument in association with a payment transaction between the customer and a merchant, and a merchant-facing device configured with a merchant application that is executable on an operating system of the merchant-facing device to (i) display information to the merchant and (ii) receive input from the merchant. In at least one example, the customer-facing device and the merchant-facing device can communicate to process, at least in part, the payment transaction associated with the payment instrument via a remote payment service system.

Abstract: Techniques associated with a customer-facing device and a merchant-facing device are described herein. In an example, a system can include a customer-facing device configured with a customer application that is executable on an operating system of the customer-facing device to (i) display information to a customer and (ii) receive input from the customer, wherein the customer-facing device includes a payment reader to read payment data from a payment instrument in association with a payment transaction between the customer and a merchant, and a merchant-facing device configured with a merchant application that is executable on an operating system of the merchant-facing device to (i) display information to the merchant and (ii) receive input from the merchant. In at least one example, the customer-facing device and the merchant-facing device can communicate to process, at least in part, the payment transaction associated with the payment instrument via a remote payment service system.

Abstract: Method, systems, and apparatus for a method of processing a payment transaction using a mobile device of a merchant. In one aspect, determining the mobile device does not have a connection to an external network; receiving data indicating a payment transaction between a customer and the merchant; determining whether the payment transaction should be stored, where the determining is based on a risk heuristic model that considers one or more of the following: a number of already stored transactions, a value of the payment transaction, a total value, where the total value is a sum of the value of the payment transaction and values of one or more already stored transactions, and risk factors associated with the customer; and based at least on the determination, storing the payment transaction on the mobile device for future processing.

Abstract: Method, systems, and apparatus for a method of processing a payment transaction using a mobile device of a merchant. In one aspect, determining the mobile device does not have a connection to an external network; receiving data indicating a payment transaction between a customer and the merchant; determining whether the payment transaction should be stored, where the determining is based on a risk heuristic model that considers one or more of the following: a number of already stored transactions, a value of the payment transaction, a total value, where the total value is a sum of the value of the payment transaction and values of one or more already stored transactions, and risk factors associated with the customer; and based at least on the determination, storing the payment transaction on the mobile device for future processing.

Abstract: A taxi fare system for a vehicle includes a meter, a wireless access point carried on the vehicle, a first mobile computing device a wireless, a second mobile computing device, a display and a credit card reader. The meter is configured to receive data from the vehicle indicating distance travelled, to measure waiting time, and to calculate an amount of a passenger fare based at least on the distance travelled and the waiting time. The first mobile computing device is positioned in a driver section of the vehicle and receives data from the meter. The second mobile computing device is positioned in a passenger section of the vehicle and receive card information from the card reader. The first and second mobile computing devices are configured to wirelessly connect to the wireless access point.