“Turns out, interface on the Android tablet is just a webview.”
A 2015 building put a NetThings energy monitor in every flat and never fitted the fuse to power it. The box runs Linux 3.10 on a 32-bit ARM9 with 118 MB of RAM, a debug agent running as root on port 1534, and password hashes modern hardware cracks easily. The developer got to tick a smart building box. The tenant got a rootable computer bolted to the wall.