How is a Custom Token generated?

A Custom Token is generally generated through a process that involves the user entering their credentials, specifically their username and password. This mechanism is commonly seen in authentication systems that favor secure access through a time-bound token. The token acts as a temporary authorization credential, often reflecting the user's identity and providing access to specific resources or systems for a defined period.

In many applications, the token is created as part of a broader security framework, where user authentication ensures that only legitimate users can request tokens based on their submitted credentials. The time-bound aspect of the token is crucial for maintaining security, as it limits the token's usability and mitigates risks associated with credential leakage.

The other options do not capture the standard approach to generating a Custom Token. For instance, a unique identifier alone does not represent the authentication process that relates to a user’s credentials. Auto-generated tokens typically come from backend services without user input, which diverges from the concept of a custom token created through user interaction. Lastly, manually creating tokens for each user may not be practical in dynamic environments where automated and scalable solutions are preferred.