8.2. Establishing Requirements

Before developing a web UI for the Laddie alarm appliance, we established the following requirements to guide us with its design:

• The web interface should be easy to use.

• The web interface should support a wide variety of browsers, including text-based ones.

• The web pages should update automatically as the state on the appliance changes.

• The web pages should adhere to Internet standards, avoiding proprietary features.

• The implementation should work with various webservers so that the appliance webserver can be replaced should a better one become available.

• The implementation should be simple so that it can be easily maintained.