> For the complete documentation index, see [llms.txt](https://docs.monogoto.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monogoto.io/advanced-console/platform/how-to-configure-device-limitation-by-imei.md).

# How to Configure Thing Usage Limitation by IMEI?

The following chapter contains examples on IMEI Master functionality.\
IMEI Master functionality is very useful for customers who want to restrict the SIM cards to be used only with one device IMEI number or with one manufacturer device IMEI range (TAC). This functionality adds an extra layer of security, since in case your SIM card will be lost or stolen they will not be usable in other devices.

{% content-ref url="/pages/-Mf2VqGMwbdruk6pDFJp" %}
[How to Configure Thing to Work Only With One Device IMEI?](/advanced-console/platform/how-to-configure-device-limitation-by-imei/how-to-configure-thing-to-work-only-with-one-device-imei.md)
{% endcontent-ref %}

{% content-ref url="/pages/-Mf2VpHYlD1JueqDnAn7" %}
[How to Configure Things Group to Work Only With IMEI range (TAC)?](/advanced-console/platform/how-to-configure-device-limitation-by-imei/how-to-configure-things-group-to-work-only-with-imei-range-tac.md)
{% endcontent-ref %}

{% hint style="info" %}
[For more information about IMEI you can read this article <br>](https://en.wikipedia.org/wiki/International_Mobile_Equipment_Identity)[For more information about TAC you can read this article](https://en.wikipedia.org/wiki/Type_Allocation_Code)
{% endhint %}