Keycard-blog

Productupdates, veiligheid en ecosysteemnieuws.

Latest updates

Featured article

Hardware wallet device used to store cryptocurrency private keys offline
What is a hardware wallet? How it works and what to check before you trust one
A hardware wallet is a physical device that keeps the private keys controlling your cryptocurrency away from the computer and phone you use every day. This guide covers how it works, where it fits among other wallet types, what it does and does not protect you from, and what to check before you rely on one. What is a hardware wallet? A hardware wallet is a dedicated device used to store the private keys that control access to your cryptocurrency. The coins themselves remain on their blockchai
K
Kamila
on 8 Oct 2026

All Keycard blog posts

The Importance of Seed Phrases Explained
K
Kamila
on 29 Sept 2026
A handwritten crypto wallet recovery phrase on paper next to a hardware wallet smartcard
Reproducible builds in hardware wallets: why "same source, same binary" matters
K
Kamila
on 31 Aug 2026
Diagram showing reproducible build verification between hardware wallet source code and shipped firmware binary
Random number generation in hardware wallets: how your seed is really made
G
Guy-Louis Grau
on 19 Aug 2026
Keycard Shell hardware wallet random number generator for crypto seed security
Smartcard hardware wallets: how a secure element stores and signs
K
Kamila
on 24 Jul 2026
Smartcard hardware wallet tapped via NFC to sign a transaction using an on-card secure element chip.
Best air-gapped hardware wallets compared: QR signing, open source, and secure elements
K
Kamila
on 24 Jul 2026
Air gapped hardware wallet signing a transaction via QR code, keeping private keys isolated from any networked device.
Open-source Ledger alternatives compared: Keycard, Trezor, Coldcard and more
K
Kamila
on 24 Jul 2026
Comparison of open-source hardware wallets Keycard, Trezor, Coldcard, and BitBox02 as alternatives to Ledger.