Link sharing example
The following example demonstrates the power of link sharing in the Device Co-op. In this example, we have 2 fictitious companies, the News Company and the Finance Company. Both companies are members of the Device Co-op. Person A is a consumer who either logs on or browses the websites of each company from multiple devices.
Because Person A has authenticated to the news site with their mobile phone and tablet, the News Company identifies them with a consumer ID. It sends that ID to the Device Graph as a cryptographic hash. The Finance Company has seen these devices before, but Person A hasn't logged on to the site. Consequently, the Finance Company does not know if or how these devices relate to each other or how they are associated with Person A.
Given the cryptographic hash of the consumer ID, the Device Graph recognizes that these devices are related to each other and a particular person. To companies that do not participate in the Device Co-op these site visits would appear to come from separate, random devices. In any case, once the Device Graph has the hashed ID it:
Given these conditions, the Device Graph now shares the link connecting these devices for the News Company with the Finance Company. During this process, the Device Graph duplicates and shares the link from one co-op member to another.
At this point, the Device Graph performed its role successfully. Both the News Company and the Finance Company have a clear picture of an identity. They can reach Person A accurately across all their devices.