How facebook pixel tracking works across devices/browsers? -


i read here "if audience moving between desktop, mobile or tablet devices, wasting budget on wrong audience." how can facebook team identify these people 1 person? example, today visit airbnb office laptop (through browser have never logged facebook), go facebook other device on different network. can facebook identity same user? if yes how that? ip based tracking? (makes sense if pass email/mobile/ip)


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