The woman was looking disapprovingly at the boy who had been standing around by himself on the sidewalk. She looked down where he had been and saw the device there, a toy perhaps?
She walks over and picks it up, it was quite heavy. She looked at the device, which was made of solid construction and now was obviously not a toy. Turning it over in her hands before pointing the arrow on it experimentally in a direction and pressing the button.
She had pointed it at a goth girl standing with her friends loitering and now...