Cell phone locations have long been tracked by cell phone providers using cellular signals (e.g., LTE) or by user-installed applications for navigation or social media using GPS or WiFi connections. These track individuals to a building or locale. For proximity tracking however, finer-grained information is desired: was someone else within 6 feet? For how long? How recently?  For finer resolution, new applications use Bluetooth or WiFi signal strength--but these have technical challenges and their efficacy is unproven.
In this context, we advocate for consumers and public health authorities (as consent permits them) to have FAIR access to cell phone proximity tracking data.

Access and FAIR Data Principles

For consumers to share their privately held data with consent to public health agencies, the status quo approach of data sharing agreements (DSAs) is too lengthy (months to years)--it is an impediment. Urgent and ongoing real-time access to this data, is required. 
While the private sector has some incentives to share data--such as corporate goodwill--they are under no obligations to do so, if it does not serve shareholder interests; and there aren't any governing frameworks to make the process efficient, aside from DSAs at this time.