When you configure a session recording, you can choose to optionally record keystrokes, that is text entered by your visitors into text form fields.
If enabled, Piwik will capture these keystrokes and track them so they will be shown when you replay the recorded video. Piwik will automatically mask password form fields and common credit card form fields. If you want to mask additional form fields, simply add a
data-piwik-mask attribute to an element. Learn more about masking keystrokes.
Note that Credit Card fields are automatically masked and not tracked (learn more)