Design and implementation of software and technology solutions for the purpose of product and document authentication and tracking, and brand monitoring and protection, to protect against counterfeiting, tampering, and diversion, and to ensure the integrity of genuine products and documents; Providing user authentication services using biometric hardware and software technology for e-commerce transactions; Providing user authentication services using biometric hardware and software technology for mobile and security applications; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Providing user authentication services using single sign-on technology for online software applications; Providing user authentication services using mobile and security applications for e-commerce transactions; User authentication services using blockchain technology for mobile and security applications; User authentication services using single sign-on technology for online software applications