The USB/NFC-connected microcomputer secures and protects digital identities and sensitive information through strong multifactor and password-less authentication, real-time traffic security, and data encryption. It features a dedicated secure core with an embedded operating system (SeOS) that performs cryptographic calculations and supports various encryption algorithms including AES, SHA, and RSA. The device provides license management, secure credential storage, and isolated environments for managing passwords and certificates, while protecting against phishing and fraud attacks, creating VPN connections, and supporting multiple security applications to ensure comprehensive protection for internet traffic and digital assets.