Tracking of passenger's previous flights re. 2019-nCoV

[Sriajuda]

In light of the coronavirus crisis, what technical means exist to track where a person disembarking had traveled previously?

Not just immediately preceding (connecting) flights, but flights taken within maybe the previous 2 weeks?

Is tracking information from the use of smartphones available outside of NSA/CIA, etc?

And if such information is available, is it being used to screen potential carriers of the virus?

Thanks,

George (slf)