Abstract: Gateway devices can use dual cellular interfaces, each assignable to at least one of a plurality of network services, to provide reliable communications for client machines. A gateway device can use one of the dual cellular interfaces assigned to a first network service as a primary interface and the other assigned to a second network service as a hot backup interface. The backup interface remains connected to a cellular network while communications are routed on the primary interface. Accordingly, the gateway device can rapidly switch communications between from the primary interface to the backup interface. Applications, for example, for ATM payment processing, vending machine telemetry, point of sale payment processing, kiosk internet connectivity, remote monitoring and control, mobile or electronic health, and remote information displays, may run on the gateway devices, on servers, on user devices, or a combination of these devices.

Abstract: A method of machining an article including the steps of providing a resilient article having a lower face with a predetermined profile and an upper face; providing a reference article with an upper face having a reference profile; abutting at least part of the lower face against the reference article upper face and applying force to resiliently deform the resilient article a predetermined amount whereby the lower face of the resilient article substantially conforms to the shape of the reference article upper face; machining the upper face of the resilient article to a predetermined configuration; releasing the force applied to deform the resilient article whereby the upper face of the resilient article deforms to adopt a desired configuration.