Harmless so far. What if he suddenly decided to be a little less than harmless?

Danny doesn't generally use it. Hell, half the time he doesn't even keep it on him. He knows most of the places he goes to by heart. Outside of helping him find his way, it lets other people know that he is, in fact, blind. He doesn't like people knowing it though. He doesn't like the pity.

"Nice to meet you, Trunks."