RFID for Exporters: Step-by-Step Guide

Why overseas buyers ask for RFID

If you export garments and knitwear from Tiruppur, Noida or Bengaluru, leather goods and footwear, home textiles, pharmaceuticals, auto parts or electronics, there is a growing chance that a buyer has asked you to deliver goods with RFID tags already applied. This is called source tagging: the tag is applied at the factory, not at the buyer's warehouse or store.

The reasons are practical. A distribution centre can read every item in a sealed carton in seconds instead of opening it and scanning barcodes one by one. Stores can count thousands of items in minutes with a handheld reader, so inventory accuracy improves, which in turn supports online orders fulfilled from store stock. Tags applied at source also mean the buyer does not pay for labour to tag items later. For you, the supplier, the request is a compliance requirement: meet it and you remain an approved vendor; get it wrong and you risk chargebacks or rejected shipments.

Many large retailers ask suppliers to source-tag specific departments first, often apparel, footwear and home goods, and extend the programme over time. The details differ from buyer to buyer, so the golden rule of this chapter is simple: always follow the buyer's written tagging specification, and ask the buyer's compliance team when anything is unclear.

Step 1: Read and decode the buyer tagging specification

The tagging specification (sometimes called a source tagging guide or vendor RFID manual) is usually a PDF of 20 to 80 pages. Read it end to end and convert it into a one-page internal summary. The typical sections are:

1. Scope: which departments, product categories and ship dates the programme covers.
2. Approved inlays and chips: a list of inlay models (antenna plus chip) the buyer accepts. Many programmes rely on independent test labs and approved-inlay lists. Some retailers, for example, refer to inlay performance programmes run by university laboratories such as the Auburn University RFID Lab. You do not need to test inlays yourself, but you must use one from the approved list.
3. Tag format and placement: whether the tag sits in a hang tag, price ticket, sewn-in care label or adhesive label, and exactly where on the product it goes.
4. Encoding: the EPC scheme, usually SGTIN-96 based on GS1 GTINs, plus rules for the filter value, serial numbers and whether user memory or passwords are used.
5. Label artwork: the visible print, often including a logo that tells consumers the label contains RFID, and barcode and text positions.
6. Carton and pallet labelling: shipping labels, often with an SSCC barcode, and whether cartons also need an RFID tag.
7. Data exchange: whether the advance ship notice (ASN) must list EPCs, or only GTIN quantities per carton.
8. Testing and certification: any sample approval, first-shipment audit or ongoing quality checks, and the penalties for non-compliance.

Step 2: Get your GS1 identifiers in order

A standard retail RFID tag carries an Electronic Product Code (EPC). The most common scheme, SGTIN-96, combines a GS1 company prefix, an item reference (together these come from the product GTIN) and a serial number that makes each individual item unique. If your buyer expects you to use your own GTINs, you need a GS1 India membership and a company prefix. Indian RFID can help with GS1 barcode registration, and the chapter on GS1 and RFID explains how barcodes and EPCs relate.

Whichever applies, build a clean GTIN master: one row per style, colour and size (or per SKU for non-apparel), with the GTIN, description and buyer item number. Most encoding errors trace back to a wrong GTIN in this table, so lock it down and control changes. For how the GTIN is packed into the 96-bit EPC, see EPC encoding and tag memory.

Step 3: Choose a label converter or in-house encoding

You have two broad options for producing encoded tags.

Option A: Label or tag converter service

A converter is a company that turns approved inlays into finished hang tags, tickets or labels, prints the artwork and variable data, encodes the EPC and verifies every tag. You send an order file (GTINs and quantities per purchase order), and receive tags in rolls or bundles sorted by size. This is the fastest way to start, because the converter usually already holds the buyer artwork templates and approved inlays.

Option B: In-house encoding with RFID printers

You buy pre-converted blank RFID labels or tickets from an approved source, then print and encode them on your own RFID printers, driven by your software. This gives control over lead times and suits factories with high volumes, many small orders or frequent last-minute changes. It also means you own the serial database and the quality checks. Read the RFID printers guide and RFID encoders explained before deciding.

Step 4: Set up encoding data and serialization

Every tag must carry a unique EPC. In SGTIN-96 the GTIN part repeats for every item of the same SKU, so uniqueness comes from the serial number. Practical rules:

• Keep one serial counter per GTIN (or follow the serial range rules in the buyer spec, if it allocates ranges to suppliers or converters).
• Never reuse a serial, even for reprints. A reprinted tag gets a new serial and the old one is marked void.
• If you use more than one converter or encoding location for the same GTINs, split the serial ranges so they can never overlap.
• Store every encoded EPC with the purchase order, carton and date. This record is what you use to build EPC-level packing lists and to answer buyer queries later.
• Use the filter value the specification asks for; for item-level retail tags this is usually the value for a point-of-sale item.

Step 5: Apply tags at the right production stage

Where you attach the tag depends on its format. Sewn-in care labels with an RFID inlay must be added on the sewing line, so the encoded labels must reach the line sorted by size before the bundle starts. Hang tags and price tickets are normally attached at finishing or packing, after ironing and checking, which reduces the risk of tags being damaged by heat presses or washing. Adhesive labels for footwear boxes, home textiles or electronics cartons are usually applied at packing.

Follow the placement drawing exactly. The buyer has tested that position for readability in folded, hung and boxed states. Pay special attention to metal: zips, rivets, buckles, foil packaging and metal trims next to the inlay can detune the antenna and reduce read range sharply. Liquids and dense stacks also matter for products such as cosmetics or pharma. If the drawing puts the tag near metal on your particular product, raise it with the buyer instead of moving the tag on your own.

Step 6: Verify every carton at packing

Verification is where compliant suppliers separate themselves from the rest. Before a carton is sealed, read it with an RFID tunnel (a shielded conveyor tunnel with fixed reader antennas) or a carton reading station, or with a handheld reader for low volumes. The software compares the EPCs read with the packing list for that carton:

1. Count matches the expected quantity per GTIN: carton passes.
2. Fewer tags than expected: find the item with a dead or missing tag, replace the tag and re-read.
3. More tags than expected or a wrong GTIN: wrong item packed or stray tags nearby; correct and re-read.
4. Duplicate or unknown EPCs: stop and investigate the encoding source.

Shield the verification area so the reader does not pick up tags from neighbouring cartons or rolls of spare tags. Keep the read results; they become your proof of what was shipped.

Step 7: Build the EPC-level packing list, ASN and dispatch

Once all cartons pass, generate the packing list. Depending on the specification, the ASN may list only GTIN quantities per carton or every EPC per carton, linked to the carton SSCC. Send it through the buyer's EDI or portal before the goods arrive. Print and apply carton and pallet labels exactly as specified, then load and dispatch. Keep the encoding and verification records for at least as long as the buyer can raise claims.

Market notes: EU, US, UK, Middle East and Russia/EAEU

Requirements come mainly from individual buyers, not from a single law, so expect differences between customers in the same country. Tags must work in both India (865-867 MHz) and the destination: approved retail inlays are generally designed for global UHF performance, which is one reason to stick to the approved list. Typical patterns:

• US and UK: mature retail source-tagging programmes in apparel, footwear and general merchandise; strict artwork and verification rules.
• EU: widespread use in fashion and sports retail; also watch for upcoming product traceability and digital product passport rules, which may influence data carriers in future.
• Middle East: large regional retail groups and franchise operators use RFID for store inventory; specifications often follow the brand owner's global guide.
• Russia and EAEU: Russia's mandatory marking system, Chestny ZNAK, mainly uses DataMatrix codes, but some categories, such as fur products, have used RFID tags. Rules change, so always check the current requirements for your product category before shipping. See Indian RFID's page for exporters to Russia and Europe.

Exporter RFID checklist

Illustrative rollout timeline

The timeline below is illustrative only; real durations depend on the buyer, your volumes and whether you use a converter.

KPIs and common pitfalls

KPIs to track

• Encoding yield: share of tags encoded and verified first time.
• Carton first-pass rate: cartons that pass verification on the first read.
• Duplicate EPC count: target zero.
• Buyer compliance score and chargeback value per season.
• Tag lead time: days from order to tags on the line.

Pitfalls

• Using an inlay that is not on the approved list because it was cheaper or available sooner.
• Dead tags from crushing, heat presses, sharp tagging guns or static damage.
• Wrong placement, especially near metal accessories that detune the tag.
• Duplicate EPCs from uncontrolled serial counters.
• Wrong GTIN for a size or colour, so the buyer receives the right count of the wrong item.
• Stray tags read during verification, hiding a real shortage.
• Ignoring specification updates between seasons.

For finished labels, UHF RFID labels and encoding equipment are available from Indian RFID. If your team needs structured training on tagging programmes, encoding and verification, the RFID courses in India cover these topics in depth.