A Performance Review of Number Entry Interfaces

  • Patrick Oladimeji
  • Harold Thimbleby
  • Anna L. Cox
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8117)


Number entry is ubiquitous and there are several ways a number entry interface can be designed. Until recently, research has been focused mainly on one type of number entry interface: the numeric keypad. Various factors such as the range of values, and the space available for the design allows for several alternative interfaces to be used for number entry. In the design of medical devices such as those used for controlled drug delivery, accurate and timely entry of numbers are required in order to reduce any risk of harm to patients. This paper reviews five number entry interface styles and reports the result of an experiment conducted to evaluate the performance differences of the interfaces based on numbers used in infusion therapy in a hospital. The result shows a significant effect of interface style on speed and accuracy.


Number entry interfaces number entry error user interface performance safety critical devices 


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Copyright information

© IFIP International Federation for Information Processing 2013

Authors and Affiliations

  • Patrick Oladimeji
    • 1
  • Harold Thimbleby
    • 1
  • Anna L. Cox
    • 2
  1. 1.Future Interaction Technology LabSwansea UniversityUK
  2. 2.UCL Interaction CenterUniversity College LondonUK

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