Running Head : HCI PUSH DOOR HANDLES Push Doors Usability Issues Push door handles come in variety of forms and it is a real world object that is picked for the assessment. These push handles in my opinion are poorly designed object that create confusion to many users. Below is an image: Door design and use of appropriate sign will provide user feedback about the state of the system. Moreover, Error prevention is another HCI principle that should be utilized in designing real life objects. Objects should be designed with the purpose of error prevention. In many push doors handle, user ends up pulling the door instead of pushing and vice-versa. A push or pull symbol on the door should not be required if push door handle is cleverly designed. An additional Push/Pull symbol on the door implies that handle is not capable of delivering the right message to the user about the state of the door. Hence, a failure at error prevention ("10 Usability Heuristics for User Interface Design | Design Principles FTW", 2016). A system or object is considered well designed, if user can initiate an action on its own instead of waiting for a response from the system.Design consistency can be ensured if door design and the handle are in synchronization with one another. For example, the image given below is a better designed door handle.
Running Head : HCI PUSH DOOR HANDLES It has the handles that clearly indicates that the door is supposed to be pulled instead of pushed. It is irrespective of the design of the door. The door meets the following HCI criteria of design ( if applied to the real world object) 1.Consistency 2.Error prevention - Design conveys the door should be pulled instead of push, hence design is based on the real world understanding itself. Reference 10UsabilityHeuristicsforUserInterfaceDesign|DesignPrinciplesFTW.(2016). Designprinciplesftw.com.Retrieved13November2016,from http://www.designprinciplesftw.com/collections/10-usability-heuristics-for-user-interface-design