Patent ID: 9210576
Filing Date: 2015-12-08
Classification: G06F,H04M,H04W

Abstract:
1. A method of wireless communication, comprising: coupling a cellular wireless modem to an intelligent appliance, wherein the intelligent appliance has a processor and a user interface input device; transmitting, by a trusted security zone of the cellular wireless modem, a trusted security zone extension application from the cellular wireless modem to the intelligent appliance; executing the trusted security zone extension application as a non-preemptible routine that is not able to be preempted on the processor, wherein execution as the non-preemptible routine prevents the trusted security zone execution application from being preempted by holding the processor and preventing another application from executing on the processor, and wherein responsive to execution of the non-preemptible routine of the trusted security zone extension application, the another application is prevented from reading an input from the user interface input device; transmitting the input received by the user interface input device to the cellular wireless modem, wherein the transmitting the input is performed by the trusted security zone extension application; and transmitting a cellular wireless message by the trusted security zone of the cellular wireless modem, where the message is based on the input received by the user interface input device.