Hardware Token
A hardware token is a physical device used for authentication, typically generating one-time passwords (OTPs) or storing cryptographic keys to verify user identity. It enhances security by providing a second factor in multi-factor authentication (MFA), making it harder for attackers to gain unauthorized access. Common examples include key fobs, smart cards, USB tokens, and biometric devices.
Developers should learn about hardware tokens when building or securing systems that require strong authentication, such as financial applications, enterprise networks, or sensitive data platforms. They are essential for implementing MFA to protect against phishing, credential theft, and unauthorized access, especially in compliance-driven industries like healthcare or finance.