{
  "url": "https://proudtek.com/products/rfid-keyfobs/",
  "sourceUrl": "https://proudtek.com/products/rfid-keyfobs/",
  "title": "Complete guide to RFID keyfobs",
  "description": "In specification terms, RFID keyfobs are the pocket-portable form factor of the RFID product family. A chip and antenna encapsulated in a compact...",
  "kind": "collection",
  "imageUrl": "https://proudtek.com/landing-images/rfid-abs-keyfob.jpg",
  "imageAlt": "Collage of six Proud Tek RFID keyfobs. ABS, leather, metal, silicone, epoxy and NFC epoxy key tag",
  "imageGallery": [
    {
      "url": "https://proudtek.com/landing-images/rfid-abs-keyfob.jpg",
      "alt": "Collage of six Proud Tek RFID keyfobs. ABS, leather, metal, silicone, epoxy and NFC epoxy key tag"
    }
  ],
  "breadcrumbs": [
    {
      "name": "Home",
      "url": "https://proudtek.com/"
    },
    {
      "name": "Products",
      "url": "https://proudtek.com/products/all/"
    },
    {
      "name": "Complete guide to RFID keyfobs",
      "url": "https://proudtek.com/products/rfid-keyfobs/"
    }
  ],
  "summary": [
    "Covers low-frequency proximity fobs, HF secure keyfobs and specialty wearable or token-style credential formats.",
    "Helps buyers separate HID-style proximity, MIFARE or DESFire security needs before sampling a keyfob line.",
    "The shortlist becomes clearer when credential format, reader compatibility and attachment style are confirmed together."
  ],
  "faq": [
    {
      "question": "Which chip should I specify for a new access-control keyfob?",
      "answer": "MIFARE DESFire EV3 is the 2026 default for a greenfield 13.56 MHz deployment. AES-128, ISO/IEC 7816-4 APDU command set, up to 28 applications, diversified keys per NXP AN10922. MIFARE Plus SE is a cheaper option when the existing reader fleet still expects MIFARE Classic 1K memory mapping and cannot yet be upgraded. Avoid MIFARE Classic 1K for new deployments. CRYPTO-1 is broken and clones are trivial. For LF-only legacy sites use EM4305 (read/write, low-security) or T5577 (clone-capable, for HID Prox retrofit). For NFC tap-to-URL plus access, NTAG424 DNA delivers AES-128 SUN authentication in the same fob."
    },
    {
      "question": "Can I clone an RFID keyfob?",
      "answer": "It depends on the chip. EM4100, EM4200, HID Prox II and MIFARE Classic 1K fobs can be cloned in seconds with a Proxmark 3, ChameleonMini or Flipper Zero because the underlying ciphers are either non-existent (EM4100) or publicly broken (CRYPTO-1). MIFARE Plus SE (AES-128 security level 3), MIFARE DESFire EV2/EV3, NTAG424 DNA, ICODE DNA, HID iCLASS SE / Seos and LEGIC advant are not practically clonable without key material. Copy shops can clone LF Prox fobs because the site is not protecting itself, not because the technology is secure; any modern enterprise should migrate to AES-128."
    },
    {
      "question": "Will a 13.56 MHz keyfob work with my HID iCLASS reader?",
      "answer": "Not by default. ISO/IEC 14443 operates at 13.56 MHz but the higher protocol layers differ. MIFARE Classic / Plus / DESFire use NXP-proprietary protocols, whereas HID iCLASS uses a proprietary HID implementation on top of ISO 15693 and iCLASS SE uses Seos. A standard MIFARE keyfob will NOT authenticate on an iCLASS reader. Proud Tek supplies HID iCLASS-compatible fobs programmed to your site's CSN or Corporate 1000 format; specify the HID reader model and credential format when ordering."
    },
    {
      "question": "What is a dual-frequency RFID keyfob?",
      "answer": "A dual-frequency keyfob contains two RFID chips in one housing. Typically an LF 125 kHz chip (EM4305 or T5577, compatible with HID Prox II / Indala / AWID / EM4100) and an HF 13.56 MHz chip (MIFARE DESFire EV3 or Plus SE). Both chips are readable independently, so the same fob works at an old 125 kHz reader and a new 13.56 MHz AES reader. Dual-frequency fobs are the standard approach to a multi-year reader-migration programme. Users keep the same fob while IT rolls out new readers building by building."
    },
    {
      "question": "How waterproof is an RFID keyfob?",
      "answer": "Standard ABS and epoxy keyfobs are rated IP54 or IP65 — fully protected against dust and against water jets from any direction, but not submersible for extended periods. Silicone fobs with moulded-in antenna reach IP67 or IP68 (immersible to 1 m for 30 minutes). No standard keyfob is rated IP69K (high-pressure high-temperature wash-down). That is a tag rating, not a keyfob one. For marine, car-wash or pressure-wash environments specify a silicone IP68 fob."
    },
    {
      "question": "What is the read range of an RFID keyfob?",
      "answer": "LF 125 kHz keyfobs (EM4100, T5577, HID Prox II) read 5-12 cm from a standard proximity reader. HF 13.56 MHz keyfobs (MIFARE Classic / Plus / DESFire, NTAG424 DNA, iCLASS) read 3-6 cm. UHF 860-960 MHz keyfobs (UCODE 9, Monza R6) read 1-4 m in line-of-sight on a keyring held outside the window, dropping to well under 1 m when the keyring is inside a trouser pocket (body water absorption). Keyfob antennas are smaller than card antennas, so keyfob read range is typically 30-40% shorter than a card with the same chip at the same reader."
    },
    {
      "question": "Can an NFC keyfob be scanned with a smartphone?",
      "answer": "Yes: NFC keyfobs with NTAG213, NTAG215, NTAG216 or NTAG424 DNA chips can be tapped against any iPhone 7+ or NFC-enabled Android phone to trigger a URL, vCard, Google review link or custom deep-link. MIFARE Classic and DESFire keyfobs can be read by iPhone XS+ and modern Android phones using specialist apps (NFC Tools, TagInfo) but are not designed for consumer tap-to-URL. For that use case specify an NTAG213 or NTAG424 DNA fob."
    },
    {
      "question": "How many keyfobs can be ordered as a minimum?",
      "answer": "Standard plain-colour ABS keyfobs from stock: 100 pieces per chip family. Custom-colour silicone or printed ABS: 500-1,000 pieces minimum for colour matching and print-plate amortisation. Leather and metal keyfobs with custom engraving: 500 pieces. Dual-frequency fobs: 1,000 pieces because the two inlay chips must be sourced and assembled together. Pre-encoding (UID lock, sector-key programming, AES-128 diversified keys, HID Corporate 1000 format, DESFire application layout) adds no MOQ and is recommended for any order of 500+ fobs."
    }
  ],
  "procurementFields": [],
  "collectionGuidanceFields": [
    {
      "label": "Check your access control system first",
      "value": "HID ProxPoint readers need 125 kHz EM or HID fobs. MIFARE-based systems need 13.56 MHz fobs. DESFire or iCLASS systems need matching secure fobs. The reader decides the chip."
    },
    {
      "label": "Shell material and form factor",
      "value": "ABS keyfobs are the standard durable option. Epoxy fobs are smaller and lighter. Silicone wearables clip to lanyards. NFC rings offer hands-free tap. Wood fobs add a premium feel."
    },
    {
      "label": "Branding and numbering",
      "value": "Most fobs support laser engraving for logos, sequential numbering for facility management, and custom color matching for brand consistency."
    },
    {
      "label": "What to include in your inquiry",
      "value": "Installed reader brand and model, chip family, fob shape preference, logo artwork, numbering range, and sample quantity."
    }
  ],
  "coreGuidanceFields": [],
  "articleGuidanceFields": [],
  "sourceLinks": [
    {
      "name": "HID Proximity 1346 ProxKey III",
      "url": "https://www.hidglobal.com/products/1346"
    },
    {
      "name": "NXP MIFARE Classic EV1",
      "url": "https://www.nxp.com/products/rfid-nfc/mifare-hf/mifare-classic/mifare-classic-ev1-1k-4k:MF1S50YYX_V1"
    },
    {
      "name": "NXP MIFARE DESFire Family",
      "url": "https://www.nxp.com/products/rfid-nfc/mifare-hf/mifare-desfire%3AMC_5348"
    },
    {
      "name": "NXP NTAG 213/215/216",
      "url": "https://www.nxp.com/products/rfid-nfc/nfc-hf/ntag-for-tags-and-labels/ntag-213-215-216:NTAG213_215_216"
    },
    {
      "name": "ISO/IEC 14443-3:2011",
      "url": "https://www.iso.org/standard/50942.html"
    }
  ],
  "related": [
    {
      "name": "RFID Key Fobs",
      "url": "https://proudtek.com/product/rfid-key-fob/"
    },
    {
      "name": "RFID Proximity Fobs",
      "url": "https://proudtek.com/product/proximity-fobs/"
    },
    {
      "name": "DESFire Tag",
      "url": "https://proudtek.com/product/desfire-tag/"
    },
    {
      "name": "NFC Smart Rings",
      "url": "https://proudtek.com/product/nfc-ring/"
    },
    {
      "name": "RFID Cards Collection",
      "url": "https://proudtek.com/products/rfid-cards/"
    }
  ],
  "productSpecs": [],
  "machineJsonUrl": "https://proudtek.com/machine/products/rfid-keyfobs.json",
  "machineTextUrl": "https://proudtek.com/machine/products/rfid-keyfobs.txt",
  "author": {
    "name": "Proud Tek Co., Limited"
  },
  "publisher": "Proud Tek Co., Limited",
  "credentials": [
    "ISO 9001:2015",
    "ISO 14001:2015",
    "RoHS Compliant",
    "CE Marking",
    "REACH Compliant"
  ],
  "generatedAt": "2026-03-16T01:42:30.697Z"
}