Description
Released in 2022, HaLo (“Hardware Locked Smart Contracts”) chips generate non-extractable secp256k1 ECDSA keypairs during manufacture. A holder can instruct a chip to generate signatures for on-chain or off-chain authentication, asset transfers, address whitelisting, and related uses; signatures support standards including EIP-191 and EIP-712. HaLo chips provide NFC/NDEF, browser-based Credentials API, and proprietary APDU interfaces.