Agency/Disclosure Question

[Josh K]

As a licensed real estate broker, I know you must verbally disclose to a seller that you are an agent. But if you work with an unrepresented seller (ie an FSBO seller) as the buyer in a transaction, are you creating any implied dual agency to be an agent of that seller? Or is there a written agreement that can be used in this situation to make it clear that you are not representing the seller?

Note my question has to do with the laws of agency, there is no commission in this case so that is not a concern.