Check the second half of the DP3T white paper - the 'high cost' version does not do that, and unlike the Apple/Google version, allows you to redact more specifi

Check the second half of the DP3T white paper - the 'high cost' version does not do that, and unlike the Apple/Google version, allows you to redact more specific times of day you do not want to upload, for whatever reason. It is important to also weigh up these issues against daily bandwidth concerns for usability.