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Google search behavior on QR codes in Germany peaked in the summer of 2021, with interest in the topic generally being stable since. QR codes have different utilities, but in this context are mostly associated with contactless (tap to pay) payments with smartphones or wearable devices. Germany's interest in QR codes largely seems to come from its digital vaccine certificate. The Corona-Warn-App, or CWA, was rolled out in the summer of 2021 and was mandatory when one wanted to access a restaurant, attend an event, or travel. As of November 9, 2025, interest in QR codes has increased, reaching a value of **. Domestic transaction figures for QR payments are difficult to find, making it difficult to separate whether the interest in the QR code topic stems from the coronavirus app or from a genuine interest in QR for, for example, payments. Most figures on the topic come from consumer surveys and focus on the share of respondents who used such a payment method or not.