Hey, If my understanding is correct, this faq answer is not precise. It mentions hasing the

user id

with the

trackingKey

but I think it hashes the experiment

hashAttribute

(which could or could not be the users id) and the

trackingKey

, am I correct or it always uses the

id

attribute?

agreed, our docs could be more clear on this. Typically (but not necessarily) the

hashAttribute

should be set to be the user_id, session_id, or device_id; but it could be anything uniquely identifiable.