The speed, the fact that I can supply the photos via an app so I basically need only a minute with the keys (e.g. when the colleague is on the toilet and leaves the keys on the desk), and the fact that there are no eyewitnesses.
A store clerk might be telling me to wait a bit for the key to duplicate, but in reality call the cops on me; there are cameras in hardware shops which can identify me and the bundle of keys and also there are other customers in the store.
You can get a high quality wrist-impression of a key in a couple of seconds if left alone with keys. You can even learn to sight read keys quite trivially. I don't think its so much the speed you are talking about as, perhaps, the accessibility of technique. I mean, if you can get a clean photo of a key, you can reproduce it. It's a physical object, its just metal. One of the first keys I ever made was from an old saw blade & just based on memory. Worked the very first time.
So, I don't think these services really change the game at all, but perhaps provide a new level of information to the general public?
