Asset tracking sounds simple in theory: tag something, know where it is. In practice, three different technologies do that job in three different ways, each with its own strengths and its own failure points. This guide covers what asset tracking actually is, the mechanics behind each tracking method, and where each one holds up and where it doesn’t.

What is asset tracking?

Asset tracking is the process of monitoring physical assets, usually equipment, inventory, or machinery, using barcode labels, RFID tags, or GPS trackers attached to each item. It matters because every piece of equipment a business owns is part of its asset base (broadly, anything of value a company could convert to cash), and losing track of it is a direct hit to that value, whether the loss is theft, misplacement, or simply not knowing where something sits in a warehouse. For the fuller picture on how businesses structure this kind of tracking at scale, see our guide to inventory control systems.

How asset tracking actually works

Regardless of which technology is doing the tracking, the underlying process is the same three-step loop:

1. A tag or label is attached to the asset. This could be a printed barcode, an RFID chip, or a battery-powered GPS unit, depending on what’s being tracked and how.
2. The tag transmits or is scanned for its identifying data. A barcode is read by a scanner; an RFID tag broadcasts its identifier over radio waves to a reader; a GPS tracker sends its location via satellite.
3. That data flows into asset management software, like Linnworks’ warehouse management tools (powered by SkuVault), which updates a central record of what’s where. This is what actually makes tracking useful: without software tying the scans together, you have a pile of individual data points instead of a system you can act on.

When that loop runs continuously, a business gets a live picture of its equipment locations and can catch discrepancies (a missing item, an asset in the wrong place) quickly instead of discovering the problem weeks later during a manual count.

The three tracking technologies

Barcode labels

Barcodes are scanned manually, either with a dedicated barcode reader or a smartphone camera, and matched against the asset record in your software. They’re the cheapest and simplest of the three methods, and the tradeoff is that someone has to physically scan each item; there’s no passive or remote tracking. See our guide to implementing a barcode inventory system for the full setup process.

RFID tags

RFID (radio-frequency identification) tags use electromagnetic fields to transmit an identifier to a nearby reader, without needing a direct line of sight the way a barcode scan does. Passive RFID tags are smaller and cheaper, with a read range of roughly 1 to 10 centimeters up to 5 to 6 meters depending on frequency; active tags are larger, more expensive, and can be read from hundreds of meters away.

RFID has two practical limitations worth planning around. Reader and tag collisions happen when signals from two or more readers overlap, and any tag caught in that overlap can’t respond, so reader placement needs to account for this during setup. RFID tags also carry limited onboard storage, typically 2,000 bytes or less, which is enough for standard asset tracking but worth knowing if you’re expecting to store more than a basic identifier on the tag itself.

GPS trackers

GPS asset trackers combine satellite positioning with mobile connectivity to report an asset’s location from anywhere in the world, and unlike a vehicle’s built-in GPS, they run on an internal battery rather than being hard-wired to a power source, which means they can be attached to almost anything.

The main limitation is the Faraday cage effect: an enclosed metal space, like an intermodal shipping container, can block the electric field a GPS tracker needs to transmit, making the asset temporarily untraceable in transit. Tracking resumes as soon as the item is removed from the container, but it’s worth knowing about before you rely on GPS for in-transit visibility.

Where asset tracking gets used

Asset tracking works for businesses of any size, but it’s most valuable to industries managing large volumes of expensive or heavy equipment: farming, construction, mining, and municipal emergency equipment fleets, alongside shipping, logistics, and supply chain operations more broadly, where knowing an asset’s exact location and status is core to the operation running at all.

Benefits of asset tracking

Control and accountability. Knowing exactly where an asset is, and being able to trace how and when it went missing, gives businesses the ability to fix process gaps rather than just replace lost equipment and hope it doesn’t happen again.

Better customer service. Applying asset tracking to shipping means telling customers exactly where their delivery is instead of leaving them guessing, and it protects the seller too: accurate tracking data is your evidence against a buyer-fraud claim that a package never arrived.

Organization and forecasting. With consistent location data, warehouses can be organized around how items actually move, cutting the time it takes to locate stock. That’s the same principle behind improving warehouse picking speed: the less time spent searching, the more time spent actually fulfilling orders. That same location data also supports more accurate forecasting of future inventory needs.

The accuracy gain compounds over time: 87% of Linnworks customers cite inventory accuracy as the single biggest value they get from the platform, and consistent asset tracking, whichever technology it’s built on, is a direct driver of that number. See why inventory accuracy matters for the full cost breakdown of getting this wrong.

Choosing the right method

Barcode, RFID, and GPS aren’t competing options so much as tools suited to different jobs. Barcodes work well for high-volume, low-cost items where manual scanning isn’t a bottleneck. RFID suits situations where passive, contactless reading matters, like counting large batches of stock quickly. GPS is the right call for high-value, mobile assets that need tracking outside four walls — construction equipment, vehicles, or shipping containers — as long as you plan around its in-transit blind spots.

Whatever the method, the software tying it together is what turns raw scans into a system you can actually run a business on.

See how Linnworks’ inventory management and warehouse management tools keep asset data accurate, or request a demo to see it in action.