Similar to their Librem laptops, Purism is planning for hardware kill switches on their inaugural privacy-minded smartphone and expect to have three switches. These three physical switches would disable cameras/microphone, WiFi/Bluetooth, and the cellular baseband.
Additionally, when all three hardware kill switches are activated, it also triggers a "lockdown" mode. The lockdown mode will also disable various sensors on the devices including GNSS (GPS), IMU, and ambient light / proximity sensors. The lockdown mode is also expected to be extensible to allow for other software-based behavior when all kill switches are flipped.
More details on the Purism blog.
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