The Trusted Connectivity Alliance (TCA) is celebrating the maturing of the integrated SIM (iSIM) in a paper just published, asserting that the technology is now ready to underpin new IoT use cases. The document advocates global and open standards developed by the GSMA among others, ensuring that iSIM technologies are both interoperable and at least as secure as either removable or embedded SIM (eSIM). The paper, entitled ‘Integrated SIM functionality: drivers, approaches to standardization and use cases’, defines an iSIM as an implementation of SIM functionality on a hardware tamper-resistant element (TRE), integrated into a host system-on-chip (SoC). It is an extension of the eSIM), which is a programmable SIM card incorporated in a device but still occupying a dedicated slot distinct…