Keycard Blog

Product updates, security, and ecosystem news.

Latest updates

Featured article

Card-shaped hardware wallet with secure chip for storing crypto keys and signing transactions.
Card-shaped hardware wallets: what to check, and how the main cards compare
A card-shaped hardware wallet keeps your crypto keys in a chip the size of a bank card. It fits where a payment card goes, and it needs no cable to carry around. The shape is the easy part to judge. This guide covers the questions that matter more: where the keys live, where you see what you sign, and how you recover if a card is lost. Then it looks at the card wallets on sale in 2026. Not every crypto card is a wallet you sign with Three kinds of product look alike: * Signing cards. The ca
K
Kamila
on 30 Oct 2026

All Keycard blog posts

Keycard vs Tangem in 2026: open standards or seedless cards?
G
Guy-Louis Grau
on 30 Oct 2026
Keycard vs Tangem hardware wallets with orange boxing gloves, comparing Tangem's NFC card and Keycard Shell with a transaction signing screen.
BIP39 passphrase: what the 25th word protects, and what it doesn't
K
Kamila
on 16 Oct 2026
Keycard Shell screen showing the passphrase entry step during card setup.
What is a hardware wallet? How it works and what to check before you trust one
K
Kamila
on 8 Oct 2026
Hardware wallet device used to store cryptocurrency private keys offline
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