What happens if a dynamic QR code service shuts down?
If the service hosting the short redirect URL disappears, QR codes that depend on that domain can stop redirecting even though the printed pattern remains perfectly readable.
Explanation
Dynamic QR codes introduce a dependency that static codes do not have: the redirect server must keep responding.
The printed QR pattern encodes a short URL owned by the service. If that domain is shut down, removed or misconfigured, the phone may still read the QR code but will no longer reach the intended destination.
How can you reduce the risk?
Choose a durable provider, avoid short trials for long-lived print and keep a record of your destinations. For critical uses, a solution based on a domain you control can reduce dependency when such an option is available.
It is also useful to configure fallback destinations and periodically test important QR codes already deployed in the physical world.
Concrete example
A QR code printed on an outdoor sign may remain there for five years. If its short URL depends on a provider that disappears, the sign may need to be corrected or replaced even though the QR pattern is intact.
Common mistake
A downloaded PNG or SVG is not a backup of the redirect service. It preserves the pattern, not the infrastructure deciding where scans are sent.
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