German police use Luca coronavirus contact-tracing app to find potential witnesses

Luca is subject to Germany’s strict data-protection regulations and, by law, information from the app cannot be accessed by non-health authorities and used in criminal prosecutions. The app stores the user’s personal details and uses QR codes to record how long they’ve spent at a location. The information is encrypted to obscure any personal information, according to Culture4life, the company that developed the app, and can only be decrypted by health authorities if someone at a venue is infected.

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