According to the EU drone regulation, I am required to register with the official operator registry UAS.gate*.
*Switzerland has not yet adopted the EU drone regulation, registration is therefore voluntary and free of charge for drone pilots in Switzerland until further notice.
Once I have registered, I must also complete an online self-study course, which will teach me about the rules and regulations which apply to flying a drone in my weight class. The knowledge I have acquired is tested directly with exam questions. This is a multiple-choice theory exam with 40 questions. Passing the exam is mandatory and cannot be compensated by way of existing licences or certificates. Training and exam are voluntary and free of charge for Swiss drone pilots until further notice.
Further information on the current situation for Swiss drone pilots in terms of registration, training and exam are available in the FAQ (section "Motion 20.3916 and the application of the EU drone regulation in Switzerland").