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Subscriber Identity Module

A Subscriber Identity Module (SIM) is a secure smart card used in mobile devices to authenticate users and store information related to their mobile service.

Description

In the context of Non-Human Identities (NHIs), a Subscriber Identity Module (SIM) plays a crucial role in providing unique identification for devices that connect to mobile networks. Traditionally associated with mobile phones, SIM cards are now increasingly used in various IoT (Internet of Things) devices, enabling them to communicate over cellular networks. Each SIM card contains a unique International Mobile Subscriber Identity (IMSI) that identifies the subscriber on the network. For NHIs, this means that devices like smart meters, connected vehicles, and industrial sensors can maintain unique identities and securely authenticate to the network, allowing for reliable data transmission and service provisioning. The SIM not only facilitates connectivity but also enhances security by encrypting communications and ensuring that only authorized devices can access the network. As the world moves towards greater connectivity with more devices becoming 'smart,' the importance of SIM cards in managing Non-Human Identities will continue to grow.

Examples

  • IoT devices such as smartwatches that require cellular connectivity.
  • Connected vehicles that use SIM cards for telematics and navigation services.

Additional Information

  • SIM cards can also be virtualized in the form of eSIMs (embedded SIMs), which allow for remote provisioning.
  • The use of SIMs in NHIs raises considerations for security, privacy, and network management.

References