badge. >> you look around you see an imposter by looking at changes in coloration. i can tell when you are leaning in on the conversation when you should be leaning away. that indicates a lot about the interaction. the whole point with this technology is to make places a better place to work to make them more productive. >> back in my office i ask ahern about another device that promises increased productivity, the smart phone. >> that's the gold mine. your phone calls, your texts, your physical location, the apps you use, the e-mails. it is near unlimited. >> by now you are surely thinking that all that digital information has made the job of the skip tracer, the tracking and finding of people who would much rather stay lost a lot easier. and you are right. as we said in the beginning back in new york city ahern is no longer in that line of business. it turns out, big data has opened up a more profitable line