在机器对机器（M2M）应用程序上的工作使得UICC嵌入在通信设备中的可能性增加，使得UICC不容易访问或更换。更改此类设备上的网络订阅的能力变得有问题，因此需要新的方法在这些嵌入式UICC（eUICC）上安全远程地提供访问凭据，并管理从一个MNO到另一个MNO的订阅更改。本文档定义了嵌入式UICC的用例和需求。

Work on Machine-to-Machine (M2M) applications has given rise to the possibility of having a UICC that is embedded in a communication device in such a way that the UICC is not easily accessible or replaceable. The ability to change network subscriptions on such devices becomes problematic, thus necessitating new methods for securely and remotely provisioning access credentials on these Embedded UICCs (eUICC) and managing subscription changes from one MNO to another.The present document defines the use cases and requirements for an embedded UICC.