Hardware Wallets
3 storiesHardware Wallets groups physical devices designed to keep cryptocurrency signing keys isolated from an internet-connected computer or phone. Products in this section may use secure elements, air-gapped QR workflows, USB, Bluetooth, NFC, touchscreens, buttons, biometric controls, or removable backup media, but all rely on explicit transaction review and recovery procedures. Coverage includes firmware releases, supported signing standards, supply-chain security, companion applications, backup design, vulnerabilities, discontinued models, and usability. Software-only wallets and custodial accounts belong elsewhere because they do not use a dedicated signing device.
Seed Phrase Backups Create Major Self-Custody Security Gaps
Lost or exposed recovery phrases still wipe out self-custody holdings more often than chain exploits. Here is how paper, single-site, and digital backups fail-and what UKey Seed Ring claims to change
UKey Seed Ring Offers Wearable Backup for Crypto Seed Phrases
UKey's Seed Ring stores wallet recovery indexes in a battery-free NFC ceramic ring, separating seed backup from transaction signing for self-custody users who want less fragile paper notes
Coldcard Hardware Wallet Flaw Exposes Bitcoin to Remote Key Theft
A vulnerability in Coldcard hardware wallets could let attackers remotely reconstruct private keys from seeds generated on certain firmware, putting user funds at risk and requiring urgent action.