Sonicare Brush Head NFC Data
Ever since stumbling over Cyrill Künzi's article about the Sonicare brush head timer reset (which I've written about here), I've wondered what else is stored in the data. This is what a dump of the Mifare Ultralight NTAG213's memory from a white Sonicare A3 Premium All-in-One head looks like: The memory is organised into "pages" with each page holding 4 Bytes. PageByte 0Byte 1Byte 2Byte 30x00UID0UID1UID2BCC00x01UID3UID4UID5UID60x02BCC1InternalLock & Block-Locking0x03OTP0x04 - 0x27USER […]https://blog.mbirth.uk/2026/03/29/sonicare-brush-head-nfc-data.html

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