The document lists and describes 21 internet-connected devices known as the coolest Internet of Things gadgets. Some of the gadgets highlighted include Google Glass, which are glasses that function as a camera and display; Withings smart scales that track weight and send data to a phone; a smart thermostat from Nest that learns user preferences; and various devices that allow remote control and monitoring of items like cars, luggage, lights, and home appliances from a smartphone. The document was created by Bernard Marr as an overview of emerging connected devices.