QR Code That Never Expires

Capacity and limits

The destination is stored in the pattern itself, so there is no account, no redirect service and nothing that can lapse. The consequence runs both ways: the code cannot expire, and it also cannot be repointed. What is printed is what it will always resolve to.

Device compatibility

Static codes work with every scanner ever made, including offline hardware, because decoding needs no network and no vendor. A code printed today will read the same way in a decade, which is not true of codes that route through a third-party service.

Common mistakes

• Treating permanence as covering the destination too — the code will outlive the page it points at if that URL changes.
• Printing a long run against a brand-new address before it has settled, which is the one thing you cannot correct later.
• Assuming a dynamic code from a subscription service is equivalent; those stop resolving when the subscription does.

Printing and placement

Because these codes are meant to outlast the print run, choose durable stock and finishes: laminate outdoor placements, and prefer matte, which resists both glare and wear. Scale the width to the scan distance and leave the quiet zone clear.