Abstract. Looking up ? you realize that one of the twelve light bulbs of your living

room chandelier has to be replaced. You turn electricity o?, move a table to the center

of the room, put a chair on top of the table and, new bulb in hand, you climb up on

top of the chair. As you reach the chandelier, you notice that. . . all bulbs look alike

and that you have forgotten which bulb needed to be changed.

Restart all over again?

Luckily, an e?ortless creative solution exists. By just touching the light bulbs you can

determine the cold one and replace it! Put di?erently, information about the device’

malfunction leaked-out via its temperature-Abstract. Looking up ? you realize that one of the twelve light bulbs of your living

room chandelier has to be replaced. You turn electricity o?, move a table to the center

of the room, put a chair on top of the table and, new bulb in hand, you climb up on

top of the chair. As you reach the chandelier, you notice that. . . all bulbs look alike

and that you have forgotten which bulb needed to be changed.

Restart all over again?

Luckily, an e?ortless creative solution exists. By just touching the light bulbs you can

determine the cold one and replace it! Put di?erently, information about the device’

malfunction leaked-out via its temperature...