I'm curious why it's designed to hold the object in front of a rather distant camera for several seconds in order to identify it, instead of mounting a camera o

I'm curious why it's designed to hold the object in front of a rather distant camera for several seconds in order to identify it, instead of mounting a camera on the vacuum arm itself so that it can observe the object as it approaches. The face it grabs tends to be the biggest and contain the product label so you'd also be able to get a better look at the object.