Have you tried correlating visits from different devices from the same IP? E.g. if you get 2 devices from 3 St John St within an hour, then the same 2 from The

Have you tried correlating visits from different devices from the same IP? E.g. if you get 2 devices from 3 St John St within an hour, then the same 2 from The IBM Building again within an hour, you can make a fair assumption that's the same person (you need the second site to isolate family members). I've never implemented this - never had the time nor clients who wanted it enough - but have always wondered whether it might work. Maybe later this month. In declarative SQL, naturally.