Paul Williamson, general manager and vice president of Arm's IoT business, said they expect that there will be a giant IoT device connected to the Internet by 2035.

microprocessor company Arm released the latest integrated SIM card design iSIM architecture on February 21, which is to integrate SIM cards, application processors and data chips. Paul Williamson, general manager and vice president of Arm's Internet of Things business, said that they expect that there will be a giant IoT device connected to the Internet by 2035. These devices need to establish a secure identity so that Internet service providers can trust and provide services.

has always been a traditional SIM card in the past, and after long-term verification on mobile phones, it is indeed a strong and trustworthy mechanism. Paul Williamson believes that its biggest limitation is that it has to change the card when changing the Internet service provider, which will not cause too much problem for the mobile phone, but it will make it difficult for IoT devices to expand.

In the future, tens of thousands or hundreds of thousands of IoT devices may be required to deploy, which may be distributed in remote areas or difficult to reach places. Physical replacement of SIM cards and transfer network service providers will be difficult to move. In addition, Paul Williamson also said that reducing the volume of the device occupied by the SIM card is also an important investigation of cost and device size design. The simpler the design of the SIM card, the lower the cost, it will promote the development of the Internet of Things. embedded SIM card (eSIM) and integrated SIM card (iSIM) are all ways to achieve this goal.

Therefore, Arm published the iSIM architecture of GSMA embedded SIM cards, which includes three parts in the integrated chip, namely application processor, data chip and iSIM. Paul Williamson said that this can also help reduce costs.

In addition, iSIM can also be used for platform security architecture design principle (PSA) introduced by Arm in 2017, as a security authentication. PSA is a general industrial security architecture to ensure the robustness of hardware and firmware.