ZKNox, a research institution backed by the Ethereum Foundation, has significantly reduced the on-chain verification cost of the Falcon quantum-resistant signature scheme. The cost has been cut from 24 million gas to just 2 million gas, marking a 12-fold improvement in efficiency. This advancement brings the transaction cost of generating post-quantum secure signatures via hardware wallets closer to that of standard transactions. Founder Nicolas Bacca announced these developments at EthCC[9], highlighting the challenges hardware wallets face due to the Ethereum Virtual Machine's (EVM) limitations in supporting efficient cryptographic signatures. ZKNox is also working on a standardized SDK to enhance hardware wallet compatibility with account abstraction features like social recovery and multi-signature. Additionally, the team is exploring zero-knowledge proof generation on hardware devices to verify signature validity on-chain without exposing sensitive data. ZKNox aims to establish an open-source hardware security standard, positioning hardware wallets as universal, quantum-resistant digital identity signers.