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There is a need and an ability to design specialized keyboards for some situations.
It is concluded that the reduction of basilar membrane velocity that followed loud sound was caused by changes in cochlear amplification and that the cochlear response to intense stimulation is determined by the passive mechanical properties of the inner ear structures.
This study demonstrated that stimuli that evoke equal amplitude neural responses in both ears of a bilateral CI user or which are matched in current level cannot be assumed to be perceived as equally loud.
Applications: These findings may influence keyboard standards and the design of keyboards.
Proceedings ArticleDOI
D. Asonov, R. Agrawal 
09 May 2004
324 Citations
We show that PC keyboards, notebook keyboards, telephone and ATM pads are vulnerable to attacks based on differentiating the sound emanated by different keys.
Results show that standard soft keyboards perform best, even at small space allocations.
Open accessProceedings ArticleDOI
07 Sep 2015
144 Citations
Experiments with three types of keyboards and off-the-shelf smartphones demonstrate scenarios where our system can recover $94\%$ of keystrokes, which to our knowledge, is the first single-device technique that enables acoustic snooping of passwords.
Soft keyboards, because of their ease of installation and lack of reliance on specific hardware, are a promising solution as an input device for many languages.
The study indicates both keyboards strengths and weaknesses, and highlights a set of recommendations for developing a more accessible keyboard for blind people.
Since onscreen keyboards compete with other user interface elements for limited screen space, it is essential that soft keyboard designs are optimally laid out.