How eSIM Technology Drives the Development of IoT Devices

Source | Qianjia Network

Introduction

Since its launch, eSIM (Embedded-SIM) technology has been hailed as a new step in the development of IoT devices. The most interesting impact is in the field of IoT devices, where the use of embedded chips instead of SIM cards is expected to improve reliability, security, and lifespan. However, eSIM technology has been on the market for over four years, and its application scope is still quite limited (such as mobile phones, laptops, and portable modems).

eSIM technology offers many benefits for IoT devices, some of which are incremental improvements in line with the development of SIM cards, while others completely change the game. This article will overview several key issues worth noting.

Information Security and Device Security

The killer feature of eSIM is the ability to switch between multiple profiles by downloading it to the chip. While this greatly enhances quality of life, it is a strong warning signal for anyone concerned about network security, as it implies the possibility of tampering.

To address this risk, GSMA (Global System for Mobile Communications) has proposed a protective layer called SM-DP+. This solution involves verification through external servers, preventing the switching of profiles from any other device.

eSIM has a significant advantage derived from its embedded nature. Unlike regular SIM cards that can be easily removed, eSIMs are hardwired into the device. This allows for tracking the device whenever it is powered on, potentially reducing the risk of theft.

Design Improvements

eSIM follows the miniaturization path of SIM cards. It is much smaller than the previous generation, measuring about 2.5×2.5 millimeters, while the nano SIM card measures 12.3×8.8 millimeters. The size differences in IoT devices are vast, which is a valuable asset for many applications:

Beacons and tracking devices
Standalone connectivity solutions
Medical devices
Wearables

In addition to being small, the embedded design of eSIM also allows for the removal of slots, which take up significant internal space in devices, not to mention the additional complexity. In this case, this technology eliminates some limitations that hinder IoT development.

Device Lifespan

In addition to being bulky, the previously mentioned SIM card ports also come with a considerable drawback: they compromise the integrity of the device casing. This is not an issue for mobile phones, as their usage environment is usually mild. However, many IoT devices are often exposed to harsh environments and need to withstand many challenges:

Moisture
Extreme temperatures
Vibration
Physical impact
Dust and other particles

With eSIM, these issues will no longer be a concern, and the device casing can be designed to be as robust as possible, significantly extending the lifespan of the device. At the same time, a connector-less design minimizes the likelihood of faults or failures, further enhancing device reliability.

Interoperability

Finally, it is worth mentioning the strategic considerations. eSIM uses a single standard that is supported by many carriers and hardware manufacturers. This is a major argument for supporting widespread adoption, especially in areas where innovation is slow. Expanding on this point means there is an opportunity for scalability, allowing for large-scale deployment of eSIM-driven IoT solutions.

The Current Status and Future of eSIM in IoT

Despite these advantages, the actual adoption of eSIM in the IoT sector has been relatively slow. Currently, devices supporting eSIM are quite rare on the market.

eSIM technology sounds like a perfect match for IoT devices, improving security, design, and scalability of solutions. Some of these roles are yet to be proven, but the confirmed roles will undoubtedly benefit the innovation of IoT devices.

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How eSIM Technology Drives the Development of IoT Devices

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