In our previous article, we discussed why the real challenge of fixed asset inventory is not the tagging itself, but aligning the asset register, physical reality and the way the organisation operates. Before looking at how an RFID-based inventory is carried out in the field, however, there is an important step that needs to be addressed first: how do we turn the accounting records and the physical assets into a system on which fast, radio-based inventory processes can actually be built?

When introducing an RFID-based fixed asset inventory system, many organisations expect the technology to immediately show where their assets are and to replace their previous time-consuming inventory process within a matter of hours. RFID can indeed achieve this — but there is one prerequisite that often receives less attention at the beginning of the implementation: first, we need to tell the system exactly what it is supposed to look for.

In practice, the fixed asset register and physical reality rarely match perfectly. This is why, in many organisations, the first RFID-based inventory is not simply a faster inventory count. It is the point at which the assets recorded in the books must, often for the first time, be systematically linked to what can actually be found on site. That requires considerable work. The system only becomes fast after the initial groundwork has been completed.

The asset register does not necessarily reflect what we physically see

A fixed asset register is fundamentally structured according to financial and accounting logic. Accounting works with the information recorded on delivery notes, invoices and related documents — which is both natural and necessary. Physical use, however, may gradually diverge from that structure.

Consider a simple example. A computer workstation may originally be purchased as a single item consisting of a laptop, docking station, three monitors, keyboard, mouse and UPS. On the invoice and in the fixed asset register, all of this may be recorded as a single fixed asset item. In physical reality, however, these components may later begin to lead separate lives: one monitor may be moved to another workstation, a new and larger monitor may be purchased for the original workstation, and the docking station may be reassigned to another user. People within the organisation now treat these components as separate physical assets, while in the external fixed asset system they are still part of a single accounting item.

The opposite situation is also common. An invoice line may contain, for example, 100 chairs. From an accounting perspective, they may be recorded as one grouped fixed asset. Physically, however, they are 100 separate objects — perhaps five located in one building and ninety-five in another.

This alone demonstrates that one of the first questions is not what type of RFID tag should be used, but rather what exactly we consider to be a physical asset that needs to be identified.

Not every fixed asset is a physical object

Data received from an external fixed asset system may contain many different types of items. Some are conventional physical assets — machinery, IT equipment, furniture, instruments and other equipment. Others may have no independent physical form at all: software licences, intangible assets, certain brand- or rights-related items, and other assets that exist only at the level of accounting records. These items still need to be managed and, where required, included in inventory processes, but clearly not all of them can be fitted with an RFID tag.

This is why one of our first steps is always to interpret the data received from the external fixed asset system. We need to determine whether each item should receive an RFID identifier, a barcode-based physical identifier, or only a technical identifier within the system. The technology is merely the result of that decision. The real task is determining what a particular line in the asset register actually represents in physical reality.

The first inventory is more than data collection

Once we have decided what needs to be physically identified, one of the largest tasks begins: the assets have to be found. In many cases, this means going through the organisation room by room, locating the relevant fixed asset item, determining which physical object corresponds to it, and creating the relationship between the registered item and the physical asset.

At this point, another question quickly arises: are we only looking for items that already exist in the asset register, or are we also documenting everything that is physically present? The two approaches are not the same.

Companies are full of objects whose status may not be immediately obvious. There may be a coffee machine brought in by an employee, a privately owned chair, or a piece of equipment that is being used but has no clear link to the fixed asset register. An tagging team cannot always determine whether such an item should be considered a fixed asset, whether it belongs to the company, or whether it should be added to the register. These are no longer technical questions. They require a series of accounting, organisational and business decisions.

The RFID tag ID is not the fixed asset ID

One of the most common conceptual mistakes in RFID systems is treating the identifier of the RFID tag as if it were identical to the fixed asset identifier used in the external fixed asset system. They are not the same.

The fixed asset ID is the logical, corporate identifier of the asset. The RFID identifier, by contrast, is a secondary physical identifier.

This distinction is important because an RFID tag may be damaged, lost, replaced or reissued, and a single asset may even be associated with multiple RFID identifiers over its lifetime. If a tag needs to be replaced, there is no need to recreate the same RFID identifier. The relationship between the old tag and the fixed asset can simply be terminated, and the new tag can then be assigned to the same asset. The identity of the asset itself does not change.

This approach allows RFID to function as a genuine physical identification layer without becoming confused with the financial and accounting logic above it.

Tagging is really about building relationships

Tagging is often considered part of the inventory process — and in a certain sense it is, since the person carrying out the work is physically present at the asset. From a process perspective, however, something different is happening.

During tagging, we create the relationship between:

• the item recorded in the external fixed asset system,
• the physical asset,
• and the RFID identifier.

It is essentially an association process. Later inventory counts simply make use of this relationship by reading the RFID identifier from the physical environment.

This is why the initial tagging phase can take more time than the customer may first expect. RFID inventory becomes fast later precisely because the work of creating these relationships has already been completed.

The company does not stop operating during tagging

Tagging a large asset base does not necessarily happen in a single day. During that time, however, new fixed assets continue to arrive. A functioning system therefore cannot be based on the assumption that the entire asset base can simply be frozen, everything tagged, and the system only then put into operation.

New master data may continuously arrive from the external system. A newly created item may initially have no RFID tag assigned to it, and the association can later be created either through a web interface or on a mobile terminal.

There are several possible operating strategies. RFID tags can be prepared in advance and assigned to predefined assets, or blank tags can be used and linked to the relevant fixed asset directly on site. Both approaches can work. What matters is that the system manages the entire lifecycle of the relationship.

But what happens if the physical asset arrives before the invoice? In practice, this is far from unusual. A physical asset may already be present on site and even in use while the related financial process has not yet been completed. As a result, the final identifier may not yet exist in the external fixed asset system.

A beanbag chair, monitor, small piece of equipment or other asset may already physically exist, while from an accounting perspective there is still nothing to which it can be assigned.

In such cases, there is little value in making the physical object effectively “invisible” to the system. Instead, it can be registered under a temporary identifier and assigned an RFID tag. Later, once the final item has been created in the external system, the two can be linked through an administrative step.

In our systems, we handle this intermediate state using what we call Dummy-TAG logic. This is a good example of how physical reality and financial administration do not always change at exactly the same point in time — and why a well-designed system must be able to handle that discrepancy.

The real benefits begin after the initial clean-up

The first RFID implementation often requires more organisational effort than companies initially expect. This is not because RFID itself is slow. Quite the opposite: RFID reading speeds can be extremely high.

What takes time is establishing the relationship between the asset register and physical reality for the first time. We need to determine what each registered item actually represents, what physically belongs to it, whether it requires an identifier, what type of identifier it should receive, and how that relationship should be managed in the future.

Once this has been done, the real benefits of RFID begin to emerge. During the next inventory, we do not have to repeat the same clean-up process. The system already knows which RFID identifier belongs to which physical asset and which fixed asset record.

From that point on, the question is no longer “What is this?”, but rather “Is it here, and where did we find it?”

This is the point at which RFID can make fixed asset inventory processes faster by orders of magnitude.

In the next article, we will look at how RFID’s speed is turned into a real inventory advantage: what can be accepted as verified inventory data after individual RFID readings, how locations and discrepancies should be handled, and how a few minutes of data collection can ultimately produce a controlled and auditable inventory result.