Asset tagging is the practice of attaching a unique, scannable identifier to each piece of equipment so that its history, documentation and maintenance schedule can be retrieved on the spot. It is the groundwork for every other part of a CAFM or CMMS deployment — without reliable tags, the asset register is a guess.
Tag types, and where each fits
- Barcode — cheapest, needs line of sight and a clean surface. Fine for indoor, low-abrasion locations.
- QR code — same cost profile, holds more data, scans from any angle with a phone camera and tolerates partial damage. The default choice for most building assets.
- NFC — tap to read, works without a camera and through light grime, more expensive per tag. Useful for guard patrol checkpoints and high-value plant.
- RFID — readable at distance and in bulk, which makes inventory sweeps fast. Justified where you are tracking movable assets rather than fixed plant.
- Engraved or photo-etched plates — for plant rooms, rooftops and anywhere heat, UV or washdown destroys adhesive labels within a season.
What to record against each asset
A tag is only an identifier — the value is in what sits behind it. At minimum: asset type and model, manufacturer, serial number, installation date, warranty expiry, location down to the room or riser, criticality rating, and the parent system it belongs to.
Criticality is the field most often skipped and most often regretted. It is what lets you triage sensibly when several things fail at once, and what justifies the PPM frequency for each asset when a client challenges the schedule.
Where asset tagging projects go wrong
The most common failure is tagging without a hierarchy. If every asset is a flat list, you cannot roll up cost or failure data by system, floor or building, and the register becomes a lookup table rather than a management tool. Decide the hierarchy — site, building, floor, system, asset, component — before the first label is printed.
The second failure is treating tagging as a one-off exercise. Assets get replaced, relocated and decommissioned, and a register that is not maintained is misleading within about eighteen months. Whoever owns the CAFM system needs a standing process for adding and retiring assets, not just a survey at go-live.
The third is choosing the wrong tag for the environment. Adhesive labels in a Gulf plant room or on a rooftop chiller will not survive the summer, and a register full of unreadable tags is worse than no tags because technicians stop trusting it.
Common questions
What is the difference between an asset tag and an asset register?
The tag is the physical, scannable identifier on the equipment. The register is the database it points to. The tag is worthless without an accurate register behind it, and the register is hard to keep accurate without tags.
Should we use QR codes or RFID?
QR for fixed building plant — it is far cheaper, scans on any phone, and you are standing in front of the asset anyway. RFID where assets move and you need to locate or count them in bulk, such as IT equipment, medical devices or tooling.
How long does asset tagging take for a building?
As a rough planning figure, a two-person survey team covers 150 to 300 assets a day depending on access and how much nameplate data has to be transcribed. Plant rooms are slow; repetitive assets such as FCUs and light fittings are fast. Access permissions, not surveying, is usually what extends the timeline.