Knightscope, maker of autonomous security robots that look like Daleks, are now making an IPO.
How effective these things are and how vulnerable they are to Jawas and urban cow tippers is another story.
I think there was one of these being used to harass homeless people in San Francisco and it was rendered null and void when someone smeared BBQ sauce on the cameras.
It's only a matter of time before these Coneheads start invading the UE landscape.