| Frequency, Standards, and Regional Rules |
| Air-interface standard | RAIN RFID / EPC UHF Class 1 Gen 2, standardized as ISO/IEC 18000-63 | For general-purpose passive UHF systems, confirm that both the tag and reader support the same standard and the required regional frequency plan. |
| United States | Common UHF RFID operating range: 902–928 MHz. Devices are subject to applicable FCC rules, including Part 15 requirements. | Check the reader’s permitted channels, power settings, antenna configuration, and equipment authorization for the intended deployment. |
| European Union | Common harmonized RFID range: 865–868 MHz. Equipment requirements include applicable ETSI radio standards and national implementation rules. | Confirm the exact permitted sub-band, channel use, power limits, and device conformity for each country of operation. |
| China | Common UHF RFID allocation: 920–925 MHz, subject to applicable national radio rules and equipment requirements. | Verify current national requirements and approved reader settings before importing or deploying equipment. |
| Japan | UHF RFID commonly operates in the 920 MHz band; permitted frequencies and operating conditions are set by Japanese regulations. | Use equipment configured and certified for Japan rather than assuming a setting for another region will be permitted. |
| Australia | Common UHF RFID range: 920–926 MHz, subject to local spectrum and device rules. | Check current national requirements and the reader’s approved configuration for the deployment location. |
| Other markets | Frequency allocations, channel plans, power limits, and certification requirements vary by jurisdiction. | Obtain local regulatory confirmation before selecting a fixed-frequency tag-and-reader solution for cross-border use. |
| Regional interoperability | A tag antenna is tuned for a frequency range; a reader must operate on frequencies allowed in its region. | For global supply chains, consider region-specific reader configurations and test the same tag design across the actual countries of use. |
| Regulatory compliance | Reader approval, radio-frequency exposure requirements, and permitted operating conditions may apply in addition to the air-interface standard. | Do not treat a shared RFID standard as proof of regulatory approval. Confirm current rules with the relevant national authority or compliance specialist. |
| Tag Characteristics and Application Fit |
| Item material | Paper, cardboard, plastic, glass, liquid-filled containers, and metal affect RF performance differently. | Test the tag on the final item and in its final orientation. Use a design made for mounting on metal when the tag will be attached directly to a metal surface. |
| Read distance | Read range depends on the tag antenna, reader power and antenna, regional limits, item material, tag orientation, and surrounding environment. | Do not rely on a range figure in isolation. Validate reads at the required distance using the actual reader, item, and installation. |
| Tag size and antenna | Larger antenna designs can support different performance and mounting options than compact designs, but results depend on the full system. | Balance available label area, required read zone, orientation, and item geometry. Test the smallest acceptable tag rather than assuming size alone predicts performance. |
| Memory and identifier | Check the required EPC identifier length, user-memory needs, and whether the application needs to read or write additional data. | Many inventory applications use an EPC identifier and store detailed records in a database. Confirm the specific tag’s memory capacity and encoding support. |
| Mounting and materials | Adhesive, label face stock, spacers, and enclosure materials can affect attachment and RF performance. | Choose mounting materials suitable for the item’s surface, temperature, moisture, and expected service life; test the completed assembly. |
| Environmental protection | Consider water, dust, chemicals, UV exposure, temperature, vibration, and cleaning processes. | Specify an ingress-protection rating only where applicable, and verify it for the finished tag or enclosure under the relevant test conditions. |
| Use case | Retail inventory, warehouse cartons, reusable containers, industrial equipment, and asset tracking have different read and durability needs. | Define the read point, item speed, tag orientation, expected lifetime, and failure tolerance before comparing tag models. |
| Validation before purchase | Performance in a test environment may differ from performance around liquids, metal, dense tag populations, or other radio devices. | Run a pilot with representative items and operating conditions. Record read rate, missed reads, and unwanted reads before finalizing the specification. |