Swiss Cryptocurrency hardware wallet maker Tangem has been granted a US patent for ring-type devices designed to store digital assets and sign blockchain transactions.
Tangem Ring Wallet Patent covers secure wearable cryptography signatures
Patent number 12307443 issued by the US Patent and Trademark Office covers the technology behind wearable cold wallets. Tangem’s Ring incorporates a secure built-in chip that stores your user’s private encryption key. To sign a blockchain transaction initiated on a smartphone, users bring rings near the phone and utilize close field communication (NFC) technology.
The signing process occurs entirely within the secure elements of the ring. The private key is not sent externally. According to an announcement shared with Bitcoin.com News, Tangem said it ensures that the patented architecture ensures that private keys aimed at providing hardware-grade security remain quarantined within the device. The Zug-based company is also developing contactless cryptocurrency payments features on the ring.
The company explained to our Newsdesk that this was awarding Tangem’s third US patent in 2025. Previous patents cover cryptocurrency payment cards that integrate secret backup systems and self-compromising with transactions. The company’s patent portfolio, including new ring patents that are valid for 20 years, is positioned to support licensing and business partnerships.
Tangem said he is seeing opportunities in the growing smart ring market. The company believes that the global market for smart rings will experience double-digit combined annual growth, partly due to demand for wearable payments and identity solutions. Founded in 2017, Tangem is headquartered in Switzerland and reports that it serves users in over 220 countries.
Existing product lines include card-based hardware wallets. According to the team, the patented ring represents an expansion into the wearable finance sector, targeting independent users combined with the convenience of wearables.
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