[throw0101a]

Seems to be mostly in the automative and industrial space, with some embedded stuff.

I could also see it being useful for door security (badge readers, latch control).

[toast0]

For me, I've got a gate with a keypad. It's got an ethernet port, but they only ran 3 pair to it, and it works best with 2 pair for voice communications, so I've only got one pair for data, not enough to use.