From the lawsuit: "The exchanged data, both random and non-random, are time-stamped and stored in each device alongside other personal identifiers, including th

From the lawsuit: "The exchanged data, both random and non-random, are time-stamped and stored in each device alongside other personal identifiers, including the device owner’s MAC address, wireless network IP addresses, phone numbers, and personal emails. When this stored data is written onto mobile devices’ system logs, it becomes available to DPH, Google, application developers, device manufacturers, network providers, and other third parties with access to the logs. DPH and third parties can use the MAC address of a device owner and other personal identifiers to trace the logged data back to determine the individual identity of the owners."