If you observe users of an existing product without interacting with them, which elicitation technique are you using?

The term "passive observation" refers to the technique of observing users in their natural environment while they interact with a product without any direct engagement or interference from the observer. This method allows the observer to gather authentic data regarding how users interact with a product, identify challenges they may face, and understand their behaviors and preferences.

By employing this technique, valuable insights can be gained without the influence of the observer’s presence, which might alter the way users normally behave. This approach is especially useful in understanding context and nuances of behavior that might not be revealed in a direct interaction or structured interview setting.

The other terms listed do not accurately describe the act of observing without interaction. Passive interviewing suggests some level of engagement or questioning, while passive watching and passive survey do not specifically capture the intent and methodology of observation as accurately as passive observation does. Passive observation stands out as the most appropriate descriptor for the scenario presented in the question.