Whatever happened to... virtual SIMs?

Wait. We've just seen one! No, it's gone

MWC16 Everyone knows physical SIM cards have had their day. Small connected devices like wearables and IoT kit don't have the space to accommodate SIMs, and shouldn't have to. Nor should bikes. But as the operators' "most potent instrument of control", they haven't been in a hurry to give it up."