NFC-V (Vicinity)
The NFC communication technology based on ISO 15693, supporting longer read ranges (up to 1.5m) at lower data rates (26.48 kbps). Used by NFC Forum Type 5 tags for logistics and inventory applications.
NFC-V (Vicinity)
NFC-V is the NFC communication technology based on ISO 15693, extending NFC's reach from the typical 4 cm proximity range to vicinity distances of up to 1-1.5 meters. The NFC Forum mapped NFC-V to Type 5 tags, making it the bridge between short-range NFC interactions and longer-range RFID applications.
Technical Characteristics
NFC-V operates with different parameters than the proximity protocols:
| Parameter | NFC-V | NFC-A (comparison) |
|---|---|---|
| Base standard | ISO 15693 | ISO 14443 A |
| Read rangeRead rangeMaximum communication distance between reader and tagView full → (dedicated reader) | Up to 1.5 m | Up to 10 cm |
| Read range (smartphone) | 2-5 cm | 2-5 cm |
| Data rate | 1.66-26.48 kbps | 106-848 kbps |
| UID | 8 bytes (64-bit) | 4 or 7 bytes |
| Memory block size | 4 bytes | 4 bytes (Type 2) |
| Subcarrier | Single or dual | Single |
When read by a smartphone's NFC controllerNFC controllerDedicated IC managing NFC protocol stack in readers/smartphonesView full →, NFC-V tags operate at the same short range as other NFC tags because smartphone antennas are optimized for proximity operation. The extended range only manifests with dedicated ISO 15693ISO 15693Standard for vicinity-range smart cards, 1+ meter read rangeView full → readers that output higher field strength.
Type 5 Tag Chips
Popular NFC-V / Type 5 chips include:
- ICODE SLIX2 (NXP): 2560 bits user memoryuser memoryTag memory portion available for user data storageView full →, password protection, privacy mode, EAS (Electronic Article Surveillance). Widely used in library systems.
- ICODE DNA (NXP): AES-128 encryption, untraceable mode, cryptographic authenticationauthenticationIdentity verification of NFC tags/readers via passwords or cryptographyView full → for supply chain security.
- ST25TV (STMicroelectronics): Tamper detection, configurable kill and privacy passwords, NDEF support.
- ST25DV (STMicroelectronics): Dual-interface (ISO 15693 + I2C) for IoT sensor nodes. The I2C interface allows a connected microcontroller to write data that an NFC readerNFC readerActive device generating RF field to initiate communication with tagsView full → retrieves wirelessly.
Use Cases
NFC-V's combination of longer range and NFC smartphone compatibility makes it suitable for several scenarios:
- Library systems: Bulk checkout and anti-theft detection using longer-range readers.
- Smart labeling: Product tags readable by both industrial ISO 15693 readers (at distance) and consumer smartphones (at touch range).
- IoT sensor tags: Dual-interface chips like the ST25DV bridge wired sensor data to wireless NFC readout without batteries.
Related Terms
Related Guides
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The NFC glossary is a comprehensive reference of technical terms, acronyms, and concepts used in Near Field Communication technology. It is designed for developers, product managers, and engineers who work with NFC and need clear definitions of terms like NDEF, APDU, anti-collision, and ISO 14443.
Each glossary term is cross-referenced with related NFC chips, standards, and other terms. For example, the term 'AES-128' links to chips that support AES encryption (NTAG 424 DNA, DESFire EV2/EV3), and the term 'ISO 14443' links to all chips compliant with that standard.
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