Despite serial number implementation, counterfeiters replicate valid codes, and Yonex does not offer a public online verification database (unlike brands such as Nike or Apple). Consumers rely on third-party forums or physical inspection guides.
| Product Type | Serial Location | Format Example | Notes | |--------------|----------------|----------------|-------| | Badminton racquet | Shaft cone (under grip) or cap | 250672JP | 6 digits + country code (JP, TW, UK, etc.) | | Tennis racquet | Butt cap hologram | Alphanumeric, 7-8 chars | Laser-etched under “Yonex” logo | | Strings | Packaging barcode | 12-digit numeric | Batch code, not unique per pack | yonex serial number verification
| Layer | Technology | Consumer Action | |-------|------------|------------------| | 1 | Public serial + captcha lookup | Enter code → receive “first seen date” | | 2 | QR code with unique token | Scan → shows production timestamp | | 3 | Blockchain registration (Ethereum/NFT) | Immutable proof of ownership | | 4 | Tamper-evident holographic seal | Visual + tactile check | Despite serial number implementation