# How does the "Smart Device Blocking" work?
The **Smart Device Blocking** feature works by detecting devices that change their IP address after a previous visit. If a device has visited before and later switches to a fake VPN, MIDA app will recognize the IP change and block access from that device.
The purpose of this feature is to help prevent fraudulent access.
If you have any questions, feel free to contact us via **Crisp Chat** or email us at [support@mida-app.io](mailto:support@mida-app.io?subject=%5BMIDA%20Support%5D%20Question%20about%20Fraud%20Score\&body=Hi%20MIDA%20Team%2C%0A%0AI%20have%20a%20question%20about%20the%20Fraud%20Score%20feature.%20Please%20assist%20me%20with%20the%20following%3A%0A%0A-%20Shop%20URL%3A%20%0A-%20Issue%20details%3A%20%0A%0AThank%20you!%0A%0A%2D%20Your%20Name).
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# 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://docs.mida-app.io/mida-fraud-filter-ip-blocker/faq/how-does-the-smart-device-blocking-work.md?ask=
```
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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.