Part of the puzzle is figuring out what the real puzzle is

There have been recent breakthroughs in that area along this exact line of thought, actually.

“Public domain” is a copyright term which isn’t really relevant here. The point the other user is trying to make is that, legally speaking, calling something “private” when it very well may be not private is at best disingenuous and at worst a lawsuit waiting to happen.

A lot of small electronic devices without screens(which are quite common) probably need something. That said, an ultra-bright LED, especially blue, which seems to be the most annoying, is not the way to go.

I prefer midrange crap from China