sensor walk

My walk didn't uncover any impressive observation. Wondering with a sense of a awareness didn't lead any sensors which i hadn't already assumed to find while waiting in the classroom. Car sensors, thermostat, fire alarm, elevator, security cameras and touch key pads was mostly what i found. I realized that the word sensor could also include switches. Most of the sensors provided a level of automation, safety, maintenance, performance, observation of the inconspicuous or convenience. I suppose as artist we have to look beyond the utility and probe the unseen nature of these systems.