Maybe it's just me, but after enabled I seem to get much higher quality content on the local page.

Holy crap! I always thought Meddle's photo was of a sideways nose!

Cockpit is what I use. Simple setup and shows all sorts of graphs and statistics. https://cockpit-project.org/

Those were cool!

Definitely not new. This is how RFID tags work. They harvest energy from the transmitter to power the circuitry in the tag to send back a response.