You don't need to walk up:
1. You can do wardriving and identify them by MAC address.
2. You can use object recognition on google street view photos or your own photos while you're wardriving.
Wouldn't identifying them via MAC address be very inaccurate, as you can't pinpoint them to a specific house very easily?
Would cameras like these emit any sort of IR light or anything that might be detected from a distance?
Object recognition would depend on them being very obvious from the outside - which Rings do appear to be (I've never seen one in person) but I imagine there will be less-obvious options soon enough, if there isn't already.
