Tracking Covid -19  by Mobile Apps:

Late last week Apple and Google caused
a stir with the announcement that they
would work together on COVID-19
contact-tracing technology.
For Android users, updates will be
directly available from Google Play.Apple
and Google are to join forces to launch
application programming interfaces
(APIs) to make it possible to trace the
transmission of the virus.The goal is to
ensure that all smartphones, regardless
of whether they run on Android or iOS,
will be able to communicate with each
other, via a simple Bluetooth connection
with a view to offering their owners up-
to-date information on their levels of
exposure to infection.