If you're worried about losing your prescription glasses or expensive sunglasses you may be looking for a way to help you keep track of your eyewear. A project is on Indiegogo right now called the Glasses TrackR that slips onto the ear pieces of your glasses to help you find them when you lose them. The problem with this product to me is that the tracking sensor that goes in the glasses is large and ugly.
The sensor has to remained on the glasses or the system does you no good. The sensor works in conjunction with an application shows you an image when you're getting closer to your missing glasses. The application also allows crowd sourced searching for lost or stolen items.
You can also use the sensor from the glasses to find your lost smartphone. A single Glasses TrackR device will cost you $29, assuming the project funds. It currently has about 27 days to go and has raised a little over $2400 of its $10,000 goal.