The implementation of keystroke biometric techniques for user authentication is becoming crucial in today’s digital landscape. Its primary strengths lie in the ability to offer security and accessibility when required. As a behavioral biometric, keystroke dynamics is gaining attention because it doesn’t require additional specialized hardware, making it ideal for securing most personal digital and mobile devices. It enables continuous and unobtrusive authentication, ensuring comprehensive session security, which is vital for data protection. Keystroke data can be easily gathered through standard keyboards or touchscreens, and this paper aims to summarize its applicability, challenges, and various approaches used to address issues in the field of keystroke dynamics-based user authentication. The paper also emphasizes new and evolving methods in user verification using keystroke dynamics, paving the way for promising future research opportunities.