NFC TAGS · 40044
NTAG424 DNA NFC Tags
Unclonable NFC tags. Each tap generates a unique AES-128 signature. 47×78mm PET.
$2.50
386 left in this run
1
Ships as a letter, $0.84 · free US shipping over $75
A professional NFC tag that generates a unique encrypted authentication code on every tap. Standard tags broadcast the same data every time, so they are easy to clone. These use the NTAG424 DNA AES engine and the SUN message so the signature is embedded in the URL — iPhone and Android open it with no app. This listing is the standard PET inlay. The anti-metal backing, for metal surfaces, is a separate item.
| Chip | NTAG424 DNA |
|---|---|
| Encryption | AES-128 with CMAC |
| Memory | 416 bytes (32B, 256B, 128B files) |
| Standards | ISO14443A, NFC Forum Type 4 |
| Frequency | 13.56 MHz |
| Size | 47 × 78 mm PET |
| Read range | About 3–5 cm |
| Temperature | −25°C to +70°C |
| Backing | Standard PET |
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