Vinny and I walked away and talked about the challenge, and I came up with a plan. We wandered around innocently, keeping an eye on the booth from a distance. At lunchtime, when the crowd thinned out, the three developers took advantage of the break and took off together to get something to eat, leaving behind a woman who might have been the wife or girlfriend of one of them. We sauntered back over and I distracted the woman, chatting her up about this and that, "How long have you been with the company?" "What other products does your company have on the market?" and so on.