Currently, the download of the daily published new infection keys need to be triggered manually by pressing a button.
This is prone to human error, as users might easily forget to do so and are not warned in case of an exposure. I suggest automatically downloading the new keys daily if an internet connection is available. Using the time of the first download at the initial run of the app as scheduled download time on all consecutive days as well is how the CWA tries to spread out the downloads over a longer time frame. I deem this to be a good approach.
When concerned about using up mobile data, at least in Germany the CWA servers are all zero-listed. So downloading the keys does not affect the users mobile data cap.
But as a compromise for an approach that works outside of Germany as well, the scheduled download might (optionally?) just run when connected via WLAN.
Currently, the download of the daily published new infection keys need to be triggered manually by pressing a button.
This is prone to human error, as users might easily forget to do so and are not warned in case of an exposure. I suggest automatically downloading the new keys daily if an internet connection is available. Using the time of the first download at the initial run of the app as scheduled download time on all consecutive days as well is how the CWA tries to spread out the downloads over a longer time frame. I deem this to be a good approach.
When concerned about using up mobile data, at least in Germany the CWA servers are all zero-listed. So downloading the keys does not affect the users mobile data cap.
But as a compromise for an approach that works outside of Germany as well, the scheduled download might (optionally?) just run when connected via WLAN.