around. we can look at posture from that motion sensor by looking at changes in acceleration. are you leaning in during conversations, are you sort of leaning away. i mean, that indicates a lot about, again, the interaction. the whole point with the technology is to make places better places to work. make people more productive. >> back in my office, i asked ahern about another device that promises increased productivity. the smartphone. >> that's the gold mine of information. i mean, your phone calls, your texts, your physical location, the apps you use. the e-mails. it's 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 people who would much rather stay lost, a lot easier and you're right. but as we said at the beginning, back in new york city, ahern is no longer in that line of business. it turns out, big data has