Facebook recently rolled out a new User Interface for accessing the settings from mobile. The new user interface is quite a bit different than the previous user interface.

But why did Facebook roll out such a drastic change? If you analyze the new settings cards you’ll find actually find a few HCI principles coming together.
- The new cards now contains an icon on top and bold headings. This increases the Visibility and creates Affordance through the card UI.
- The second principle the new UI follows is Fitt’s Law. It’s now much easier to tap on these large buttons using our thumb or index finger. Here’s a YouTube link describing Fitt’s Law https://youtu.be/M-9FbUJk6tI
If you don’t know about the basic principles of Human Computer Interaction, watch my session at Pop-up Livestream, hosted by Matt Mullenweg. https://livestream.w.org [The second topic].
This is HCI, in action. Enjoy HCI.