Do dynamic QR codes use cookies?
Not necessarily for the redirect itself. However, some services use cookies or other identifiers to estimate unique visitors, measure audiences or enable marketing features.
Explanation
The basic job of a dynamic QR code is to receive a request on a short URL and redirect it to a destination. That can technically happen without setting a cookie.
Cookies or other identifiers may still be used to distinguish visits, recognise a browser, measure audiences or support advertising and retargeting.
Privacy rules distinguish between strictly necessary technologies, certain limited analytics cases and marketing trackers that normally require stronger consent mechanisms.
You also need to consider the final destination: even if the redirect service sets no marketing cookies, the website you land on may use its own trackers.
Concrete example
A QR code can redirect to an online shop without an advertising cookie at the redirect stage, then land on a shop that uses its own analytics and marketing cookies.
Common mistake
Do not assume no cookies simply because the QR code is printed. Scanning starts a web journey, and each service in that journey must be considered.
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