Thread Subject: Re: Summary of touch based controls from3/14transcript

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From: Robert_Nerhood@Dell.com
Date: Fri, May 11 2007 7:45 AM

Additionally, this summary and the applicable section of the transcript
have been posted to the WIKI.



http://teitac.org/wiki/Touch_Controls



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Sent: Friday, May 11, 2007 8:38 AM
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Subject: [teitac-hardware] Summary of touch based controls from
3/14transcript



This is an attempt to summarize key points from a transcript.
Unfortunately, there are sections that were not very clear.

Mechanical and touch sensitive controls need to be separated. In fact
there may be 3 types of controls to consider:

1. Mechanical

2. Touch sensitive

3. Touch dependent (biometric)

Mechanical controls may not be the best alternative to a touch sensitive
control - language should be drafted to allow alternatives

Touch screen versus touch sensitive:

* touch screen more of a biometric technology

* touch sensitive is still a "mechanically" driven solution but
there is greater control of the sensitivity and timing characteristics.
The example give was adaptive controls on a microwave

Potential touch sensitive characteristics:

* Control must be tactilely discernible

* Control must have a mechanism to minimize accidental activation
due to touch

* Control characteristics, such as time to registration of signal,
pressure, etc., should be adjustable

Potential touch screen content:

* An alternative method to achieve touch screen control functions
must be provided via an alternative format or interact (for example
voice control).

Rob Nerhood | Experience Design Group | Ergonomics Engineer
Dell, Inc. | One Dell Way | Round Rock, Texas 78682 - 7000
direct 512.723.2763

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