top of page

TAPSIGNER™: Your Bitcoin Superpower in a Card

In the fast-paced world of cryptocurrencies, securing your Bitcoin assets has never been more important. That's where TAPSIGNER™ comes into play, offering a simple yet powerful solution. Think of it as a Bitcoin private key on a card, a hardware wallet that fits seamlessly into your regular wallet. With its convenience and security, TAPSIGNER™ brings a new level of accessibility to Bitcoin enthusiasts worldwide.

The motivation behind TAPSIGNER™ stems from the creators' success with the COLDCARD® hardware wallet. They wanted to make hardware wallet features and security available to a broader market, and TAPSIGNER™ achieves just that. By combining affordability and functionality, this sleek NFC card empowers users with secure Bitcoin transactions at their fingertips.

So, what can you do with TAPSIGNER™? The possibilities are extensive. From phone wallet co-signing to opening and closing Lightning Network channels, this small card offers immense capabilities. It seamlessly integrates with your mobile wallet, allowing you to engage in message signing, collaborative multisig services, raw transactions, and more. TAPSIGNER™ even supports partially signed Bitcoin transactions (PSBTs) via HWI, expanding its versatility.

One of the key advantages of TAPSIGNER™ is its ability to keep your keys separate from your wallets. With its secure setup process, which combines your entropy with secret entropy on the card, your private key remains unique and secret. Additionally, the backup feature encrypts a copy of the key, ensuring an added layer of protection. Even if your TAPSIGNER™ is compromised, the private key stays safe from prying eyes.

Another noteworthy aspect of TAPSIGNER™ is its compatibility with computers. By utilizing a USB NFC card reader and the cktap command-line software, you can seamlessly integrate this powerful card with your desktop wallet. Plans for the future include adding Hardware Wallet Interface (HWI) support, further enhancing its capabilities.

Security is paramount with TAPSIGNER™. The card's private key, which controls your funds, never leaves the device. Even in the presence of malware or keyloggers on a connected computer, your Bitcoin remains secure. However, it's important to note that TAPSIGNER™ does not have a screen to display transaction information. For those seeking additional verification, the COLDCARD® hardware wallet is recommended.

Setting up and using TAPSIGNER™ is a breeze, taking just a few minutes. Its sleek design and user-friendly interface make it a fantastic option for anyone looking to enhance their Bitcoin security. With TAPSIGNER™, you can confidently navigate the world of cryptocurrencies while keeping your assets safe and easily accessible.

So, whether you're a seasoned Bitcoin enthusiast or just venturing into the crypto realm, TAPSIGNER™ is here to simplify your Bitcoin journey. Embrace the power of this compact card and experience a new level of convenience and security in managing your digital wealth.


Never Miss a New Post.

Thanks for subscribing!

bottom of page