"In runs over six hours in length, DataHand® throughput advantages climb to 12.3% and 10.4% for unadjusted and quality-adjusted throughput."
"... Operators using [the] DataHand® [special USPS DataProof model] are less subject to fatigue than are operators
using the [traditional] ten-key.""
"DataHand® runs showed an average quality-adjusted throughput 6.2 percent higher than the average for [traditional]
ten-key runs. ...differences in average quality also favored [the] DataHand® [system]. ...the differences were...statistically significant."
DataHand Speed and Fatigue Study
Analyzing USPS Mail Sorting Data
By Roberto M. Fernandez, Ph.D.
in conjunction with The Stanford University Graduate School of Business
To Read the Full Version of the Fernandez/Stanford DataHand Speed and Fatigue Study, Click Here
DataHand® is a register trademark of DataHand Systems, Inc. and is correctly used only as an adjective. The use of
the word as a noun (as is occasionally done in this study) is not authorized or condoned by DataHand Systems, Inc., which reserves all rights.