Mystery checks are primarily a quality assurance and quality guarantee tool. You know that you can trust the people that implement your concept but customers, the people who design your concept and business partners require extra reassurance. Similarly to the statutory HACCP self-monitoring measures, mystery checks meet these requirements for you. A team that has received special concept training used an internet-based check system to record all the important situations on-site for you via a tablet PC. Quality standards are defined in advance in joint meetings. You have the opportunity to guarantee quality reliability directly and evaluate it using a score or, if necessary, to reinstate quality reliability.