Also thin clients, which are widely used as POS terminals. I was pleased to see one of the ones that I did a large part of the design for in use at Costco recently.
The power function is actually very complex on these, as you need to return to the previous state in case of a power outage, you can't just automatically power on when power returns, either locally or by WOL.
These devices all boot from net, but don't use wake-on-lan. They come out of S5 (or S4, S3, S2, or S1) the old-fashioned way, by the local user pushing a button or hitting a key. There is no network administrator to remotely power up a POS terminal when the cashier opens up a register, and no need to power it up remotely since no data is stored locally.
By now I think he does understand what we're talking about, but he doesn't want to admit his mistake.