US Patent 10911893 Contact tracing via location service

Systems, methods, and computer-executable instructions for contact tracing including receiving a first beacon identifier associated with a first person and a second beacon identifier associated with a second person over a time period from a plurality of readers. A location of the first person and the second person is determined. Health data associated with the first person is received. The first person is determined to be sick and a sick period of time is determined. Two or more people, including the second person, are determined to have been within a proximity of the first person during the sick period of time. A list of the two or more people is generated.