The YouTube video ONE OF THE MOST DETAILED ISS TOUR!!! is cited in several Q&A here, and shows a tour and explanation of the ISS by astronaut Steven Swanson.
Today I noticed between
31:20 that each of the seven windows in the ISS cupola shows a pair of orange stick-on tabs on opposite edges of the glass. Sunlight can be seen through them, showing what looks like four circuit board traces and three "pads".
What is the function of these devices, what do they connect to, and have they always been there?
I'm guessing they are not for security or burglar detection.
above x2: Screenshots from here, first is zoomed/sharpened.