Any business that wants to measure the satisfaction around a product, service, facility or operation can employ the use of mystery shoppers.
This means that mystery shoppers aren't always "shopping" but also experiencing a service or attending an event. In any venue where it might be helpful for a business to hear how their service is viewed from a customer standpoint is an area where mystery shopping can be a beneficial tool. For example: Home Builders, Property Management (Apartments), Senior Living Facilities, banks, theatres, car dealerships, hospitals, concerts, shopping malls, retail stores, call centers, hotels, restaurants, parks, gyms, spas, franchising operations, government organizations, churches and airlines. The list is seemingly endless as it becomes obvious there are many more instances where mystery shopping is used in market research.