The Government is dismissing calls for more protection of personal information in the Covid-19 contact tracing system.
As of midnight last night, it is mandatory for most businesses and event organisers to give customers a way to record their visit.
No one can be forced to scan in, but it's being made increasingly difficult to resist.
It is feared that the written and scanned information could be accessed by businesses, police or even social services.
Phil Pennington reports.