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Usability Study Summary (View Full Study)

University of Applied Sciences, Hamburg

Professors Ronald Boldt and Jörg Raasch performed an analysis of mobile capturing devices at the usability lab at the department of computer sciences at the University of Applied Sciences, Hamburg.   The digital pen and paper, PDA, tablet PC, and keyboard were all tested for speed, accuracy and ergonomics in entering data.  The test persons consisted of persons with backgrounds in either technology or healthcare.  All tables, graphs and charts below are directly copied from the study.  To view the full study click here.

The overall results of the study prove the digital pen is the fastest and most accurate mobile capturing device available.  The chart below summarizes the findings of the study with regard to accuracy and error rate.   
Usability study summary graph
The chart below shows the average capturing time for the two groups for each device.  Interestingly, even the technology group found the digital pen to be faster than other devices.

Average Capturing Times for the Two Test Groups
The table below details the time spent entering data with each device.  The digital pen was the fastest overall, and nearly 3 times faster than tablet PCs, or PDAs.Table of Mobile Capturing Device Times

The digital pen was also the most accurate form of mobile data entry.  The graph below shows the complete summary of accuracy for both usage and writing errors.
Mobile device error rates

 
The only disadvantage of the digital pen was the one-way communication from the pen to the connected system.  However, Velosum has bridged this issue by using a cell phone to provide two way communications with the sender.

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