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Miki, H., Hirano, K.
A Guideline of Tactile Sybols for Visually Impaired Users
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Keywords: Auto-Teller Machine, talking ATM , tactile symbols, visually
impaired users Auto-Teller Machine,talking ATM, tactile symbols,
visually impaired users
Recently the numbers of talking ATMs (Auto Teller Machines) for visually
impaired users have been increasing in the U.S. (about 30,000 out of 350,000
total ATMs) and in Japan (about 36,000 out of 140,000 total ATMs). There
are several variations of talking ATMs and the latest addition to this family
in Japan is the tactile symbol type (TST) ATM. It adds only a set of convex
tactile symbols around a touch screen and an earphone jack to normal
touch screen ATMs without hardware keys. It can shorten operational time
for most simple ATM transactions thanks to the symbols. This paper
proposes a guideline of tactile symbol related to its simplicity: Producing
candidate tactilesymbols efficiently is important, and for that purpose, less
than four elements should be considered first before other tactile guidelines.
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