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Luca app on a smartphone scans a Luca QR code at the entrance to a swimming area in Lüdinghausen, Germany. You can check in and out with your mobile phone, which enables
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Luca app on a smartphone scans a Luca QR code at the entrance to a food market in Hanover. You can check in and out with your mobile phone and this enables
![Luca app on a smartphone scans a Luca QR code at the entrance to a swimming area in Lüdinghausen, Germany. You can check in and out with your mobile phone, which enables Luca app on a smartphone scans a Luca QR code at the entrance to a swimming area in Lüdinghausen, Germany. You can check in and out with your mobile phone, which enables](https://c8.alamy.com/comp/2FX1MPM/luca-app-on-a-smartphone-scans-a-luca-qr-code-at-the-entrance-to-a-swimming-area-in-ldinghausen-germany-you-can-check-in-and-out-with-your-mobile-phone-which-enables-corona-infection-chains-to-be-traced-2FX1MPM.jpg)
Luca app on a smartphone scans a Luca QR code at the entrance to a swimming area in Lüdinghausen, Germany. You can check in and out with your mobile phone, which enables
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