The Cryptnox C++ SDK helps developers integrate smartcard-based hardware wallet functionality into desktop applications, issuer tools, POS systems, and enterprise middleware while keeping private keys inside secure hardware.

Learn how Arduino developers can prototype secure signing workflows with a Cryptnox hardware wallet smartcard while keeping private keys out of microcontroller firmware, serial logs, and exposed embedded memory.

Cryptnox has published new Arduino and C++ SDKs to help developers build prototypes, integrations, and applications around smartcard-based hardware wallets, secure signing workflows, and NFC smartcard development.