Personal privacy is very important. In the virtual world we may already be affected because we often share various things, but in the real world anyone knows that we are safe and not monitored. Xiaomi is aware of this and will likely include a hidden camera tracking feature in HyperOS 2.0.
This is not a new feature as a few years ago, the Oppo Find X5 included it and was limited to China only. For Xiaomi, this feature may take inspiration from Ingram which is a Python-based program accessible on GitHub for the same feature. This feature will find hidden cameras by analyzing signal strength, SSID broadcasts, identifying MAC addresses and also analyzing network traffic.
For now it is still uncertain if this feature will be offered to Xiaomi HyperOS 2.0 China or globally. Which devices will support it is also still unknown. Let's wait and see if this is a good personal privacy protection feature in a phone.