Yesterday I noticed a strange thing: Little tiny pockmarks on my key card which gets me into the office. It didn't take long for me to realize what had caused this -- my teeth.
When I get to work each day I arrange everything in my right arm/hand so that I can open the door with my left. I carry the key card in my left hand and, after swiping it in front of the card reader, hold it with my teeth while I open the door. Hence, the little marks.
I suspect this card will not be recycled after I leave.
13 hours ago