isisdave
Recycles dryer sheets
Interestingly. I was in one of my regular hotels last week. The key card power system had been updated and would only work with a current card that would open the door. Those accountants are getting smarter.
Yes, until recently I used to put my library card in there if I wanted the AC to stay on (at a reasonable setting) while I was out. Recently, that hasn't worked in some; they require an actual key.
Given that this kind of key reader must cost $100 and installation another $100, people must waste a lot of energy for this to be cost-effective.