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If I want to buy a new house then I can go around and I can check to see whether there is damp patches around or whether the current owners have painted over and tried to hide any issues with leaks or damp patches, so that's another great example, also silly things like I'm going into the bakers and getting the freshest bread, you can point the phone up and identify where the freshest bread is. Or I let my dog out in the evening and it's pitch black, so now I can find my dog without having to chase around and rummage in bushes.