I bought a beaten up Sony NEX camera with PMCA(discontinued Android app market feature, not to be confused with other PlayMemories features) while ago, and turned out there’s already an app on GitHub to start telnet over Wi-Fi with root.

The camera seems to use standard gadget modules to handle USB connections, but Kernel seems to predate gadget UVC driver, and the main image sensor is not operating as a V4L2 device.

If anyone could get a UVC module to compile and load, and use Sony API to pipe video from, that’ll let users skip the HDMI part when using it as webcam.