Choose the link type before you choose the label
Start with the delivery model, not the printer settings. Workstation posters usually need a latest link that always opens the current revision. Traceability labels usually need a pinned link that stays fixed to one released revision. Then size the QR so a phone can scan it from the operator's normal position.
- Print roughly 30-50 mm square for normal arm's-length scanning; go larger in dirty or low-light areas
- High contrast: black on white is best — avoid colored backgrounds or translucent overlays
- Error correction level M or H — accounts for scratches, dust, and partial obstruction
Print for the environment you actually have
A shop-floor QR label has to survive oil mist, dust, cleaning, gloves, and sunlight. Print for the real environment, not for a clean office wall.
- Laminate posters or use vinyl-printed labels rated for the environment
- In wet or oily environments, use sealed plastic QR card holders
- Replace QR labels annually or when visibly worn — a damaged code frustrates operators
Place it where the work starts
Put the QR where the operator naturally pauses before the task starts or where the instruction is usually checked. If the label ends up inside a cabinet or behind guarding, adoption fails even if the software is fine.
- At eye level, within arm's reach of the operator's normal working position
- Near the start of the process — the operator should scan before starting, not after
- One QR per document per workstation — do not overload a single poster with multiple codes
Make the benefit obvious
Operators usually adopt QR instructions when the benefit is visible: the scan is faster than binder search and the current revision is easier to trust. Pilot one line, show the difference live, and adjust placement fast.
- Pilot one line first — let operators experience the speed advantage before rolling out plant-wide
- Show, do not tell — scan the code in front of the team and compare it to the binder lookup time
- Ask operators for placement feedback — they know where the code should go better than engineering does
Common mistakes to avoid
Most QR rollouts fail because the team prints too early. They print direct file URLs, use the wrong link type, or place the label where nobody can scan it comfortably. Get the control model right first, then print.
- Do not print direct file URLs — print stable latest links or pinned links instead
- Do not print revision-specific codes for workstation posters — use a latest link that updates under control
- Do not skip the pilot — printing 200 codes and discovering a placement issue is expensive to fix