Thought experiment: Imagine the same product, determining the location of a mobile device, through a different mechanism. How about we replace SSID with paint c

Thought experiment: Imagine the same product, determining the location of a mobile device, through a different mechanism. How about we replace SSID with paint color of a building, and the mobile device's wifi antenna with the same device's camera. From there, the service works more or less the same. The sensor (camera) sends google a snapshot of its current surroundings. Google compares this pattern of colors to a map it has created by cataloging building colors around the world and makes a best effort to find a match and provide a location based on that. Assuming you are ok with google street view (if you're not, I assume they same reasons would apply to SSID mapping), what then is the difference between the color of your house and your SSID? And to head off one possible reply, the data collection issue is orthogonal to the mapping of SSIDs. I don't think anyone is saying that it was ok to capture data packets, but for the purpose of this thought experiment, let's pretend that google had properly performed the SSID mapping and stored only SSID and location of their collection vehicle.