RFID Glossary

An RFID tag with its own onboard power source (battery), allowing it to broadcast a signal over long distances — typically 30m or more.

The hardware component that emits radio waves to activate tags and receives their response. Comes in circular, linear, and near-field configurations.

The protocol readers use to communicate with multiple tags simultaneously in the same read field without signal interference.

A defined set of rules that lets an RFID system's software exchange data with external platforms like an ERP or WMS.

An RFID tag specifically applied to a fixed or capital asset — furniture, equipment, IT hardware — for tracking, auditing, and lifecycle management, as distinct from tags used on consumable inventory.

The umbrella category of technologies — including RFID, barcodes, and biometrics — that automatically identify objects or people without manual data entry.

The method passive RFID tags use to communicate: rather than generating their own signal, the tag reflects a modified version of the reader's radio wave back to convey its data.

A pattern of parallel lines or squares that encodes data optically, read via direct line-of-sight scanning — RFID's older, lower-cost, lower-capability predecessor for automatic identification.

A hybrid tag that uses a small battery to boost read range while still relying on the reader's signal to transmit data, unlike a fully active tag.

The integrated circuit at the heart of an RFID tag, which stores the tag's unique ID and any additional data, and manages communication with the reader.

A physical location — such as a dock door or doorway — where all tagged items or people must pass, making it an ideal spot for a fixed reader.

A formal review verifying that an organization's asset register, inventory records, or documentation meet regulatory or internal governance requirements — a process RFID automates and accelerates.

A partial, recurring inventory count (as opposed to a full annual audit) used to maintain ongoing inventory accuracy with RFID-speed scanning.

A two-dimensional barcode format that packs more data into a smaller space than a traditional 1D barcode, sometimes used alongside RFID for redundant identification.

The accounting process of reducing an asset's recorded value over its useful life — RFID-tracked asset data (location, condition, age) helps automate and validate depreciation schedules.

A floor-to-ceiling RFID antenna array installed at a warehouse dock door to automatically read pallets or cartons as they pass through.

The amount of time a tag remains within a reader's field before being read — a key factor in whether fast-moving items, such as those on a conveyor, are reliably captured.

Processing RFID read data locally on or near the reader hardware itself, rather than sending every raw read to a central server — reduces latency and network load.

A unique identifier encoded onto an RFID tag, similar in purpose to a barcode's UPC but capable of identifying individual items, not just product types.

The process of writing a unique identifier or data payload onto an RFID tag's chip, typically performed by an RFID printer or handheld encoder.

Business management software — such as SAP, Oracle, or Microsoft Dynamics — that integrates finance, procurement, and asset data, commonly connected to RFID systems via API or middleware.

The U.S. regulatory body governing RFID frequency allocation and power limits in North America; other regions have their own equivalent bodies, such as Saudi CITC, with different UHF band rules.

The embedded software that runs directly on RFID reader or printer hardware, controlling its core functions and periodically updated by the manufacturer.

An RFID reader permanently installed at a chokepoint — such as a dock door, gate, or shelf — for continuous, unattended reading.

The radio wave band an RFID system operates on. The three common bands are LF (low frequency), HF (high frequency), and UHF (ultra-high frequency).

A measure of how strongly an antenna focuses radio energy in a given direction, expressed in dBi — higher gain generally means longer read range in that direction.

The dominant global standard for UHF RFID tags and readers, ensuring interoperability between hardware from different manufacturers.

An asset still listed on a company's financial books that has actually been lost, stolen, or disposed of — a common problem RFID asset tracking eliminates.

The global standards organization responsible for barcode and RFID identification standards, including EPC, widely used across retail and supply chain industries.

A mobile, battery-powered RFID reader — often built into a rugged Android or Windows device — used for inventory audits and spot-checks.

A rigid, durable RFID tag housing — as opposed to a flexible adhesive label — designed to withstand harsh environments, repeated handling, or reuse across multiple assets.

RFID operating at 13.56 MHz, offering shorter read range (up to ~1m) but high accuracy, commonly used for library books, access cards, and NFC.

The unfinished RFID component — a chip bonded to an antenna on a substrate — before it is converted into a finished tag or label.

The technical work of connecting an RFID system's data output to existing business software — ERP, WMS, CRM — so that reads translate into real operational records.

Unwanted radio signals — from other RFID readers, Wi-Fi, or metal and liquid surfaces — that can degrade tag read accuracy or range.

Another term for an RFID reader, referring to its function of 'interrogating' tags to prompt a response.

An Ingress Protection rating (e.g. IP65, IP67) indicating a device's resistance to dust and water — critical for outdoor or industrial RFID hardware.

Applying an individual RFID tag to each unit of inventory, rather than just the case or pallet, enabling piece-level visibility — standard in retail and increasingly in healthcare.

A lightweight, structured data format commonly used by RFID middleware and cloud platforms to exchange read events and asset data with other systems via API.

A command that permanently deactivates an RFID tag, typically used at point-of-sale for consumer privacy in retail applications.

A flexible, adhesive-backed RFID inlay, typically printed with barcodes and human-readable text alongside the embedded chip and antenna.

Tracking an asset from procurement through deployment, maintenance, and disposal — RFID provides the continuous location and status data that makes this practical at scale.

A requirement of barcode scanning that RFID eliminates — RFID tags can be read through boxes, packaging, and non-metal materials.

A standardized communication protocol between RFID readers and host software, enabling vendor-agnostic system integration.

A specialized RFID tag engineered with a foam or plastic spacer layer to function correctly when attached directly to metal surfaces.

Software that sits between RFID hardware and business systems, filtering raw tag reads into clean, usable events for a WMS or ERP.

A hardware component that allows a single RFID reader port to connect to and cycle through multiple antennas, reducing the number of readers needed for a large installation.

A short-range antenna type, typically under 30cm, used for precise, item-level reading at fixed points like point-of-sale counters or smart shelves.

A very short-range (under 10cm) HF-based technology used for secure identification, mobile payments, and smartphone tag reading.

An antenna that reads tags in all directions around it rather than in a focused beam, trading maximum range for broader, more forgiving coverage.

An RFID tag with no internal power source — it draws energy from the reader's radio signal to transmit its data. The most common and lowest-cost tag type.

The orientation of an antenna's radio waves. Circular polarization tolerates any tag orientation; linear polarization offers longer range but requires tag alignment.

A multi-antenna RFID structure — such as a walk-through gate or conveyor tunnel — designed to read all tags passing through a defined zone.

A method of delivering both power and network connectivity to a fixed RFID reader over a single Ethernet cable, simplifying installation.

Scheduled inspection and servicing of RFID hardware — readers, antennas, cabling — performed before failures occur, rather than reactively after a breakdown.

The process of configuring and preparing RFID hardware — readers, handhelds, tags — for deployment, including network settings, firmware, and initial encoding.

The core Gen2 protocol command a reader broadcasts to prompt tags in its field to respond, forming the basis of anti-collision inventory rounds.

A wireless technology that uses radio waves to automatically identify and track tags attached to objects, without requiring line of sight.

The maximum distance at which a reader can reliably detect a tag — influenced by frequency, antenna gain, tag type, and environmental interference.

The hardware device that emits radio waves to power and communicate with RFID tags — available in fixed, handheld, and gate or portal form factors.

A system that continuously tracks the precise location of tagged assets or people within a facility, typically with sub-meter accuracy.

A measurement of signal strength returned from a tag, often used to estimate a tag's relative distance or position from the reader.

The process of comparing a physical RFID scan of assets against the expected records in a database, flagging discrepancies such as missing or misplaced items.

Adding RFID capability to an existing facility, process, or piece of equipment that wasn't originally designed for it — common when modernizing older warehouses or asset registers.

A contractual commitment defining response times, uptime, and support obligations — used to formalize expectations for RFID system maintenance and support contracts.

A shelf embedded with a near-field RFID antenna that continuously detects which tagged items are present, enabling real-time inventory visibility.

The base material an RFID inlay is mounted on or embedded in, which affects tag performance, durability, and suitability for a given surface such as plastic, paper, or fabric.

A company or team that combines RFID hardware, software, and existing business systems into one working solution — SomasRO's core role for enterprise deployments.

The physical device — chip plus antenna — attached to an asset or item, which stores a unique identifier and responds to reader signals.

A situation where multiple tags respond to a reader simultaneously, potentially causing signal interference — resolved by anti-collision protocols like Gen2's Query command.

The rate at which an RFID system can read tags, typically measured in tags per second — a key performance metric for portals and conveyor applications.

The full cost of an RFID system over its lifetime — hardware, tags, software, integration, and maintenance — not just the upfront purchase price.

RFID operating between 860–960 MHz, offering the longest read range (up to 12m+) and fastest read speeds — the standard for warehouse and asset tracking.

The percentage of time an asset — equipment, vehicle, tool — is actively in use versus idle, a metric RFID tracking makes measurable for the first time in many operations.

A measurement of how efficiently an antenna and cable are matched to a reader's output — poor VSWR wastes transmission power and reduces effective read range.

Software that manages warehouse operations — receiving, put-away, picking, and shipping — commonly integrated with RFID for automated data capture.

An RFID inlay with adhesive backing already applied, ready to be converted into a finished self-adhesive label.

The act of programming data onto an RFID tag's chip, as opposed to simply reading its existing contents — performed once at issuance or repeatedly for reusable tags.

The physical area within which a reader and antenna combination can reliably detect tags — precise zone design prevents both missed reads and unwanted cross-reads from adjacent areas.