The SIM card has been the key instrument of the mobile operator’s power for so long that it is hard to underestimate the impact of the switch to new open SIMs. But that is now on the horizon, with the GSMA forecasting that cards based on its embedded SIM specifications will be on the market next year. The GSMA said earlier this month: “With the majority of operators on board, the plan is to finalise the technical architecture that will be used in the development of an end-to-end remote SIM solution for consumer devices, with delivery anticipated by 2016.” Long supported by Apple, Google and others, an embedded SIM card – which allows the user to move between operators without…