What is this quiet, continuous form of authentication called?

Behavioral biometrics verifies identity by quietly analyzing how a person physically interacts with their device, such as typing rhythm, swipe pressure, and even the angle at which they hold their phone. Because these patterns are difficult for an impostor to copy, banking apps can run this check continuously in the background even after someone has already logged in with a correct password.

A CAPTCHA test is a one-time challenge designed to distinguish humans from automated bots, not an ongoing profile of physical habits. A hardware token is a physical device generating login codes, useful for initial authentication but not a passive, continuous behavioral check.

This technology means a fraudster could enter a stolen password perfectly and still get flagged, simply because the way they type or swipe doesn't match the real account owner's established physical habits.