[paulgerhardt]

My experience is with making a few consumer electronics products and running through the UL/CE gauntlet. In those cases, the ‘materiel’ required to make sure you don’t shock your users to death is a bigger lift than what happens if one of nine I/O lines are held high or low or fuzzed in interesting ways when there are secondary layers of fusing built in.

From what I recall your background was in industrial machines and I concede the point that if sent an inappropriate signal, disaster would ensue. I don’t connect my CNC machines to my network but I meant to scope this discussion to home goods which are meant to have a lot of protections built in - specifically against the “user” - which compared to “internet” or “electricity” will always trump unpredictableness :-)

[jacquesm]

That's a fair point, users tend to find interesting and novel ways to apply for Darwin awards with disconcerting ease. They also excel in coming up with reasons why all those fancy lock-outs don't apply to them. Tape, pens, kitchenware, anything will do to get that gear to run with the door open...