# Identifying a device by hardware ID Your application can access detailed system information about the user's device through the [System - System Details](/deskifier/deskifier-bubble.io-docs/system-element/states.md#system-system-details) state. This object includes a variety of hardware-related data such as manufacturer details, system model, and other identifying information. One of the most useful fields is the **UUID** object, which is generated based on the device's hardware configuration. \ \ This value can be used to uniquely identify a machine and can support features such as device-based access control, licensing, or tracking which devices are authorized to use your application. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://deskifier.gitbook.io/deskifier/deskifier-bubble.io-docs/guides-and-examples/identifying-a-device-by-hardware-id.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.