What do Keyboard Dynamics primarily focus on capturing?

Keyboard dynamics primarily focus on capturing the electrical signals produced by a user when typing specific phrases. This method involves analyzing the timing and rhythm of keystrokes to create a unique profile for each user, which can be used for authentication purposes. This approach leverages the distinct ways individuals type, including their speed, pressure, and the intervals between key presses.

While the other options relate to physical characteristics of keyboards or typing speed, they do not directly capture the behavioral and biometric data that keyboard dynamics aim to analyze for security and authentication, making them less relevant to the specific focus of keyboard dynamics. Understanding the electrical signals allows for a deeper insight into user behavior, which is crucial for implementing effective identity and access management practices.