In defining the mission of the mystery shopper, he may be asked to play a particular role, to target who he is addressing and what he is going to ask them. Its action is based on collection of quantitative and qualitative information in particular thanks to an interaction of questions and answers. It is also knowing how to keep an eye open to what is happening around, whether it is cleanliness, layout, staff behavior for example.
A mystery shopper can also operate remotely without moving physically, his mission may be to telephone to analyze the reception he will receive, by email or by making contact on the website. He will then be able to measure the speed with which he is answered, if his expectations are correctly taken into account and how they are met.