> And Facebook has even been taking steps to influence offline sales, in order to bring traditional retailers into its orbit. In September, the social network introduced a tool that lets businesses with physical stores show ads to shoppers and their Lookalikes even if they visit the store but don’t buy anything. Does anyone know how this works?
And: "A new Facebook API, called the Offline Conversions API, works with a number of in-store sales systems from companies like Square and IBM to match their customer data with Facebook’s advertising data." [2]
(More science-fictiony: they could broadcast a local audio signal that fingerprints a particular location. Hmm, startup idea.)