Never stop users from leaving your site by disabling the browser Back button. This is one of the reasons why we recommend not to open links in new tabs indiscriminately because some users don’t notice they are in a new tab and struggle to go back. On the web, users rely on the browser’s Back button to navigate to the previous page in usability testing, we often see some users defaulting to the browser’s Back button when navigating a website, rather than using the website’s own navigation (such as breadcrumbs). Whenever users click a link to open a new page, screen or view, they should always be able to go back to where they came from. An Undo option (and a corresponding redo option) to allow users to backtrack on a change to a UI element.A Close link which allows users to close a new view.A Cancel link which allows the user to quit a task or multi-step process.A Back link which returns users to a previous page or screen.There are several UI controls that typically allow people to go back to the previous state of the system: Conversely, when the UI doesn’t support these actions, users feel trapped and typically report dissatisfaction. It also increases overall use and sales (in the case of exploring a product space). The ability to easily get out of trouble encourages exploration, which facilitates learning and discovery of features. Users should be able to quickly correct mistakes or backtrack on choices made. Part of a great user experience is nurturing users’ feeling of control over the user interface (UI) they happen to be using. Users often choose system functions by mistake and will need a clearly marked “emergency exit” to leave the unwanted state without having to go through an extended dialogue.
Jakob Nielsen’s third usability heuristic for user interface design is user control and freedom.
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