I think I read somewhere about this particular robot, which is modeled on an actual person, that they tried to use it to fool a few of the guy’s friends, and it worked.
Going along with someone using it like a weapon, that was one of my first thoughts. “Oh, so now Japan’s going to build a robot army.” Yeah if they could make them look and act just like people, that wouldn’t be good. Then we’d have a bunch of new-generation Cylons instead a bunch of Daleks wheeling around trying to touch your pee-pee.