How does the cryptex work?

Could you elaborate on the workings of the cryptex, please? Specifically, I'm curious about how the encryption process is initiated and how the data is secured. I understand it's a device used for safeguarding sensitive information, but I'm interested in the technical details. How does one access the contents of the cryptex once it's been locked? Is there a specific key or code required? Additionally, what measures are taken to prevent unauthorized access, and how secure is the encryption itself? Your insights would be greatly appreciated.