# UHF Source-Tagging at 11M Tags/Year — Apparel

URL: https://proudtek.com/case-studies/retail-apparel-uhf-rfid-source-tagging/
Source URL: https://proudtek.com/case-studies/retail-apparel-uhf-rfid-source-tagging/
Generated: 2026-03-16T01:42:30.697Z
Kind: page
Publisher: Proud Tek Co., Limited
Author: Proud Tek Co., Limited
Credentials: ISO 9001:2015, ISO 14001:2015, RoHS Compliant, CE Marking, REACH Compliant
Image: https://proudtek.com/landing-images/retail-apparel-uhf-rfid-source-tagging-hero.jpg
Image Alt: Rack of dark garments on wooden hangers in front of a rusted metal wall

## Description
A North American mid-tier apparel retailer source-tagged its full-price women's, men's and children's apparel SKUs with Impinj Monza R6-P UHF inlays on...

## FAQ
- Q: How many SKUs does a 340-store retailer typically scan in a single handheld scan?
  A: A 100,000-unit store has roughly 8,000–10,000 unique SKUs (size + colour combinations). The full-floor scan completes in 35–45 minutes with a Zebra MC9300 reading at 25–35 tags / second sustained. Store-back-room scans (deeper stock) take an additional 10–15 minutes. Weekly cadence is the operations team's target; bi-weekly is the fallback when staffing is short.
- Q: What about RFID interference with the security gates at the store entrance?
  A: The customer's security gates are HF-based EAS antennas (8.2 MHz), which do not interfere with UHF RAIN inlays. UHF reads do not trigger the HF gates, and the HF EAS strips on premium products do not interfere with UHF reads. The retailer is planning a future migration to dual-tech (UHF security + UHF inventory in one tag) once their EAS vendor ships a compatible reader.
- Q: How are returned items handled in the EPC system?
  A: Returns are read at the customer-service desk on a desktop reader and the SGTIN is flipped from 'sold' to 'returned' in the WMS. The item is re-shelved with the original tag intact. The chip is read-only after the supplier factory encodes the EPC, so no chip re-write is required and no risk of EPC drift across returns.
- Q: What is the EPC re-use cycle for retired serial numbers?
  A: GS1 SGTIN-96 serial numbers must be unique for the product's lifecycle. The retailer's policy is no EPC re-use within 24 months of the item's last sale, which is conservative — GS1 recommends 12 months. With a 38-bit serial-number field per supplier prefix the address space is large enough that re-use is rarely necessary.

## Machine Routes
- JSON: https://proudtek.com/machine/case-studies/retail-apparel-uhf-rfid-source-tagging.json
- Text: https://proudtek.com/machine/case-studies/retail-apparel-uhf-rfid-source-tagging.txt