QR codes are the most practical place to start with asset tracking. They are cheap to print, every modern smartphone can read them, and they carry enough data to identify an asset unambiguously. They are also easy to get wrong: labels that fade in a year, codes too small to scan, or data that breaks the moment you change systems.
This guide covers the decisions that matter — what to encode, how big to print, which label material to use, where to stick it and how to roll it out — so your QR labels still work in five years.
Why QR codes work for asset tracking
A QR code is a two-dimensional barcode. Compared with a traditional linear barcode, it has three practical advantages:
- Any phone can read it. No dedicated scanner is required, so everyone in the organization can identify an asset.
- Error correction. QR codes include redundant data, so a scratched or partly dirty label can still be read.
- Small footprint. A QR code holds more data in less space and reads from any orientation.
The limitations are equally clear. QR needs line of sight, reads one label at a time, and someone has to point a camera at it. That makes QR ideal for assets you handle anyway — at check-out, at inspection, during an audit — and less suitable for detecting movement automatically. For that, see RFID asset tracking explained.
What to encode in the code
You have two options.
Encode only the asset ID (for example AST-004812). The scanning app looks the ID up in the register. This is compact, which means a smaller, more robust code, and it never goes out of date.
Encode a URL containing the ID (for example https://yourcompany.example/a/AST-004812). Anyone who scans it with a normal camera app lands on a page — useful for "report a fault" or "if found, please return" flows.
Either way, follow three rules:
- Never encode data that changes — location, custodian, status. The code is permanent; the record is not.
- Keep IDs unique and meaningless. Do not build location or department into the ID. Assets move and departments reorganize; a sequence number never needs to change.
- Print the ID in human-readable text next to the code, so the asset can still be identified if the code is damaged.
How big should the code be?
A widely used rule of thumb is that a phone can reliably scan a QR code from about ten times its width. So:
| Code width | Approximate comfortable scan distance | Good for |
|---|---|---|
| 15 mm | about 15 cm | Small handheld tools, phones, instruments |
| 25 mm | about 25 cm | Laptops, monitors, most equipment |
| 50 mm | about 50 cm | Furniture, racks, machines scanned from standing height |
| 100 mm | about 1 m | Assets scanned from a distance, such as high shelving |
These are guidelines, not guarantees: lighting, print quality and the amount of data encoded all matter. A short ID produces fewer, larger modules than a long URL at the same printed size, so it scans more easily. Always leave a clear margin — the "quiet zone" — of at least four modules around the code.
Error-correction level
QR codes offer four error-correction levels: L (about 7% of the code can be recovered), M (about 15%), Q (about 25%) and H (about 30%). Higher levels survive more damage but need a denser code. For asset labels, M or Q is a good balance; use H for harsh environments where scratches and grime are expected.
Choosing the label material
The material matters more than the code. A perfect code on the wrong label will peel, fade or smear.
- Paper labels — fine for short-term or indoor, low-handling use. Avoid for anything expected to last years.
- Polyester or polypropylene (synthetic) labels — the default for most asset labels. Resistant to moisture, abrasion and cleaning. Choose a laminated or over-coated version for extra durability.
- Tamper-evident "void" labels — leave a pattern behind if someone peels them off. Useful for IT equipment and anything that might be swapped.
- Anodized aluminium or metal plates — for outdoor equipment, vehicles, heavy machinery and high-heat areas. More expensive but can last the life of the asset.
For printing, thermal transfer printing with a resin ribbon lasts far longer than direct thermal, which darkens and fades with heat and sunlight. If you print labels yourself, use thermal transfer onto synthetic stock. You can generate a sheet of test labels with the free asset label generator.
Where to put the label
Consistency is what makes scanning fast. Agree a placement rule for each category and stick to it:
- Visible without moving the asset — front or side, not underneath.
- Flat, clean and smooth surface. Clean with isopropyl alcohol first; most label adhesives need a clean surface and some time to reach full strength.
- Away from heat, friction and moving parts.
- Not on removable parts such as a laptop's battery cover or a detachable base.
- Same position on every asset of the same type, so users know exactly where to look.
Rolling out QR tracking
A simple, proven sequence:
- Clean up the register first. Remove duplicates and agree categories and locations. Tagging a messy register just gives you messy data faster.
- Pre-print labels in ID order. Print a batch of unique IDs before the walk-through, rather than printing on demand.
- Tag by area. Work room by room. Scan the label, confirm or create the asset record, capture a photo if useful, and move on.
- Record what you could not tag. Assets not found and assets found but not in the register are your first reconciliation list. See asset reconciliation.
- Make scanning part of daily work. Tracking value comes from scans at check-out, inspection and audit, not from the label itself.
When QR is not enough
QR is the right starting point for most organizations, but consider adding other technologies when:
- Assets move without anyone scanning them — UHF RFID with fixed readers at doorways detects movement automatically.
- Audits of large areas take too long — a handheld UHF reader can read many tags in a single pass.
- Labels are hard to reach — NFC or RFID tags can be read through some coverings, where QR cannot.
Our asset tag selection guide walks through the decision.
QR tracking in Asetavo
In Asetavo, a QR label is simply one of the tags an asset can carry. The mobile app scans it — online or offline — to open the asset, check it out, log a maintenance job or count it in an audit. You can bring your own labels or buy pre-printed ones, and the same register can hold NFC and RFID tags as you grow. The Starter plan is free for up to 100 assets — see pricing.