This guide discusses cybersecurity measures for smart factories, emphasizing the importance of modern authentication solutions in the context of the Industrial Internet of Things (IIOT). It outlines the increased risks associated with networked devices and the necessity for effective security concepts to prevent production downtime and ensure compliance with legal requirements, particularly the NIS2 directive. The NIS2 directive mandates various cybersecurity measures, including the zero-trust approach, which requires verification of every user, device, and application accessing systems. The document details how an all-in-one authentication solution from Elatec, utilizing technologies such as RFID, NFC, and Bluetooth Low Energy, can meet these requirements effectively. It highlights the flexibility and scalability of Elatec's solutions, which can be adapted to different applications and environments. Additionally, the guide notes that implementing such solutions can lead to cost savings on cyber insurance by enhancing overall security and compliance.