and now the camera is turning into a retail worker's secret weapon. when this interactive technology is triggered, a human set of eyes, ears and voice is added behind the lens. >> speaking specifically to the white male hanging out in front of the store. it is time for you to leave! you've been asked to leave. you will not receive any further warnings. the police will be dispatched. you will be arrested and cited for trespassing. leave now! >> at west tech interactive securities, elena evans is responding to a problem a store is having with loiterers. she's using special two-way surveillance equipment to monitor and respond to this situation as it's happening. >> are they still outside? i can't see them. okay. you can't see them at all anymore? do you think they went away? okay. no problem. if you have further trouble you just let us know, okay? thank you. bye-bye. >> the system is activated when a clerk pushes buttons placed strategically inside a business or squeezes a pendant. >> what this does is it sends a