If you run an e-commerce website, you probably use google analytics, mixpanel or similar to track your customers and do some funnel analysis, A/B testing etc to optimize your site.
If you run a physical retail store though, you're out of luck. How many people walk into my store and leave frustrated, without buying anything? Why isn't my hot new item selling - is no one seeing it, or are they seeing it but not buying because the price is too high? There's no easy way to find answers to these today.
Not having cookies or IPs makes tracking in the real-world a real challenge! We primarily acquire data through machine vision algorithms that run against video cameras in the stores and identify and track people, but we also use data from a host of other technologies (RFID, WiFi, Zigbee, etc) to get the full picture.
We just closed our series B, and are scaling very fast. We use C/C++, Java, Python and Flex. Our product runs on Linux. We like super-smart generalist hackers who like working on a variety of things - UI development, machine vision algorithms, AI, data mining/analytics on big data (last month we tracked nearly 2M people worldwide!). Hit us up at jobs@bvinetworks.com.