Are key fobs optional when using the Control Panel?

When considering the use of key fobs with the Control Panel in Vivint systems, the idea that they can be used optionally highlights the flexibility of the system. Key fobs serve as an additional layer of convenience for users, allowing them to arm or disarm the security system without needing to access the Control Panel directly. This optional feature is designed to enhance user experience, making it easier to manage the security system in various situations, such as when a user is entering or leaving their home.

In contrast, other options suggest limitations or requirements that do not align with the functionality of Vivint security systems. For instance, stating that key fobs are mandatory contradicts the design intention of providing user choice and customization in security options. Saying that they are only compatible with select models also misrepresents the typical interoperability expected within the Vivint ecosystem. Lastly, claiming that key fobs are only for security purposes overlooks their multi-functional nature, as they can also facilitate access to other system features beyond just security. Thus, the assertion that key fobs can be used or not accurately reflects their optional status, making it the correct response.