The protection of personal data has become a crucial issue in today's digital world. In Switzerland, the Federal Data Protection Act (LPD) regulates how companies and organizations process the personal data of their customers, employees and other data subjects. If you are responsible for a business in Switzerland or simply interact with Swiss residents, it is essential to understand your obligations and responsibilities under the DPA. In this article, we will introduce you to the basic principles of the DPA, the rights of data subjects, the obligations of companies and the penalties for non-compliance. We have tried to write this article to be easy to understand, while covering the technical aspects necessary to provide you with a thorough understanding of LPD.