{
  "url": "https://proudtek.com/products/rfid-keyfobs/nfc-epoxy-key-tag/",
  "sourceUrl": "https://proudtek.com/products/rfid-keyfobs/nfc-epoxy-key-tag/",
  "title": "NFC Epoxy Key Tag — Custom Die-Cut Resin-Domed Tag",
  "description": "NFC epoxy key tags pair an NTAG 213 / 215 / 216 / 424 DNA or MIFARE DESFire EV3 HF 13.56 MHz inlay with a CMYK-printed PVC / PET face and a UV-stable...",
  "kind": "product",
  "imageUrl": "https://proudtek.com/landing-images/nfc-epoxy-key-tag.jpg",
  "imageAlt": "Custom die-cut NFC epoxy key tags with clear UV-stable resin dome for loyalty and pet-ID programmes",
  "imageGallery": [
    {
      "url": "https://proudtek.com/landing-images/nfc-epoxy-key-tag.jpg",
      "alt": "Custom die-cut NFC epoxy key tags with clear UV-stable resin dome for loyalty and pet-ID programmes"
    }
  ],
  "breadcrumbs": [
    {
      "name": "Home",
      "url": "https://proudtek.com/"
    },
    {
      "name": "Products",
      "url": "https://proudtek.com/products/all/"
    },
    {
      "name": "NFC Epoxy Key Tag — Custom Die-Cut Resin-Domed Tag",
      "url": "https://proudtek.com/products/rfid-keyfobs/nfc-epoxy-key-tag/"
    }
  ],
  "summary": [],
  "faq": [
    {
      "question": "How durable is the epoxy dome against keychain scratches and UV fading?",
      "answer": "The outdoor-grade epoxy formulation passes ISO 4892-2 xenon-arc weathering at 1,000 h accelerated exposure with ΔE ≤ 2 colour shift and zero visible crazing or yellowing — this maps to 3-5 years of typical outdoor pocket-and-daylight carry. The cured resin resists keychain scratches (typical dome hardness > Shore D 80) and survives 1-1.5 m drop onto tile / concrete without cracking. The NFC chip inside is fully encapsulated and is not affected by mechanical or UV exposure. The indoor-default grade is acceptable for pocket carry but shifts yellow inside 6-12 months of sustained daylight — for any pet / resort / fitness / outdoor rollout, specify the outdoor grade at quote time (8-12 % unit-cost upcharge)."
    },
    {
      "question": "Can I get a completely custom die-cut shape?",
      "answer": "Yes — a custom die-cut silhouette matching any logo, mascot, product outline or brand icon is produced at ±0.3 mm contour tolerance. Custom dies carry a one-time tooling fee and a 1,000-piece MOQ. Standard shapes (round Ø 30 / 35 / 40 mm, rectangular 25 × 45 mm, oval 25 × 40 mm, square 30 × 30 mm) are available from 500 pieces with no tooling fee. A physical sample is produced and approved before the full production run begins, eliminating the 2-3 mm PVC-margin defect that signals a cheap supplier."
    },
    {
      "question": "What NFC chip should I specify for my rollout?",
      "answer": "For tap-to-URL / tap-to-vCard / tap-to-social consumer-loyalty payloads — NTAG 213 (144 bytes) or NTAG 216 (888 bytes), both phone-tappable on every iOS 13 + and Android NFC handset. For tap-authenticated loyalty / anti-counterfeit / ticketing with replay protection — NTAG 424 DNA with the SUN message + CMAC per NIST SP 800-38B. For access-control membership credentials — MIFARE DESFire EV3 with AES-128 mutual authentication per NXP AN12343 + NXP AN10922 key-diversification. MIFARE Classic 1K is available for drop-in parity with legacy HF reader estates, but the CRYPTO-1 cipher has been publicly broken since Garcia et al. 2008 and both NXP and the German BSI recommend migration, so new-build rollouts should go directly to DESFire EV3 or NTAG 424 DNA. Proud Tek cross-references the chip against your specific reader brand + model in writing before the artwork is frozen."
    },
    {
      "question": "Is the tag safe for pool, outdoor pet-collar and aquatic-fitness carry?",
      "answer": "Specify the fully-domed IP67 variant (epoxy covers front and back) + outdoor-grade formulation + 316L stainless split ring for any chlorine / saltwater / sweat-heavy carry envelope. The standard single-dome variant is IP65 — dust-tight and protected against low-pressure water jets — and is acceptable for rain / hand-wash / sweat exposure but not continuous immersion. For continuous submersion (daily pool / aquatic-fitness / dishwasher) consider the silicone keyfob variant which reaches IP68. The 316L stainless split ring clears EN 1811 nickel release at ≤ 0.5 µg/cm²/week and REACH Annex XVII entry 27, making it safe for skin-contact keychain carry and for chlorine / saltwater exposure that destroys nickel-plated rings inside 2-3 months."
    },
    {
      "question": "Can the same tag carry multiple NFC payloads (URL + vCard + Wi-Fi)?",
      "answer": "Yes — NTAG 216 (888 bytes) and NTAG 424 DNA comfortably carry a multi-record NDEF envelope combining URL + vCard + Wi-Fi handover + Bluetooth pairing + text-record in a single tap. NTAG 213 (144 bytes) is limited to 1-2 short records and is better suited to a single URL or short vCard. DESFire EV3 carries application-slot-separated payloads (per NXP AN10922) that are authenticated separately — the same tag can carry a high-security access-control credential in one slot and a phone-tappable loyalty URL in another, without cross-contamination. The NDEF / application-slot plan is frozen before tag production so the encoding bench can run at scale."
    }
  ],
  "procurementFields": [
    {
      "label": "Best fit",
      "value": "Best for access control, parking, elevator, and membership credential projects."
    },
    {
      "label": "Key options",
      "value": "Form Factor: Compact keyfob form factor for handheld access credentials."
    },
    {
      "label": "Customization",
      "value": "Confirm artwork, encoding, material, chip, and finish requirements before quoting."
    },
    {
      "label": "Quote checklist",
      "value": "Confirm mounting surface, adhesive or on-metal requirements, and expected reading distance. Compact keyfob form factor for handheld access credentials. Share target chip or protocol, quantity, format or size, print or encoding..."
    }
  ],
  "collectionGuidanceFields": [],
  "coreGuidanceFields": [],
  "articleGuidanceFields": [],
  "sourceLinks": [],
  "related": [],
  "productSpecs": [
    {
      "name": "Form Factor",
      "value": "Compact keyfob form factor for handheld access credentials."
    }
  ],
  "machineJsonUrl": "https://proudtek.com/machine/products/rfid-keyfobs/nfc-epoxy-key-tag.json",
  "machineTextUrl": "https://proudtek.com/machine/products/rfid-keyfobs/nfc-epoxy-key-tag.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"
}