A beanie and a sweater with batteries
For the beanie, the article states that it had a mainboard in the tip. I'm guessing that's where they put the battery, because I did not read that the beanie generated its own electricity.
I'm also guessing that the sweater had a (probably larger) board, also with a battery. From the image, it seems to me that the board could be on the shoulder.
The watch is obvious, the battery and control circuit are inside.
So we're going to be getting clothing with mainboards ? Is the fashion industry aware of this ?
I think this is going to be a nightmare as far as every day wear and tear are concerned. Maybe not for the beanie - after all, you don't bang your noggin all that much - but for the sweater ? In the Metro ?
Sounds like it's control board is going to be running the gauntlet every time it goes outside.