Browsing All posts tagged under »SIM«

M2M – the need for roaming and international SIMS

February 19, 2014


M2M or Machine to Machine, or Internet of Things, or the instrumented world.   OK bored now. M2M has a problem that needs to be addressed and it is good to see that T-Mobile USA are trying to fix it with a new tariff. You see the thing with M2M is that they are SIMs […]

TEE off with your mobile: Trusted Execution Environments

November 9, 2012


No not golf, sorry. You’ll have heard of the Mobile SIM in a GSM phone.  Well this is a special computing environment that can be trusted by the operator.  The SIM s used to compute the security keys and messages needed to allow the network and the phone to authenticate each other. Well that’s all […]