Equipment and asset tags
The tag outlives the manual. Twice.
Asset tags, placards, the sticker inside the panel: installed once, in the field, for the life of the machine. What they point at changes every year, and the person scanning is standing in front of the thing.
The worked example
One tag, every year of the machine's life.
The sticker says go.yourbrand.com/pump-4. Where it points is a schedule, a few rules, and a record.
What changes for you
Three things you stop doing.
Sending someone out with labels
The manual moved, the contractor changed, the number's different: change the destination, not the tag.
Printing tags after the fact
Reserve a block of codes before the units exist, print them with the batch, and assign destinations as each unit ships. The print run is a thing you can pause or point somewhere on its own.
Answering "what did that tag say last March?"
The record of what each code answered, with when and why, is kept for the life of the code and exportable with a checksum. Liability likes a record.
Ten thousand units
Your domain, your namespace, your record.
Print under a hostname you own. If we ever go away you repoint one DNS record and every tag in the field keeps working, and the whole workspace downloads as a file any web server can serve. An agent or your service system can drive it over the API: a nightly job that points every tag at the current revision and the on-call contact is a few lines.
Want the scan itself to be the event, "this extinguisher was inspected," with nothing to build? That's next; write to hello@linkshift.co and tell us what you'd tag.