When designing a website you have to consider the end user. Constraints can be defined as the practice of limiting the users actions on a website.
Limiting the users actions on a website increase the usability of the interface be reducing the likelihood of them encountering an error.
There are two types of Constraints. Physical Constraints decrease the responsiveness of control which prevents any undesired actions. Psychological Constraints will guide the user on a subconscious level making your website more intuitive. Continue reading