your statement that even sighted folks work more efficiently with mouse and 
keyboard than touch-screen is completely inaccurate. This is a field which is 
constantly and thoroughly being studied. Research papers are published 
extremely regularly on the topic.

First, when touch-screen interfaces are used in information kiosks rather than 
visual displays with keypads and navigation devices, user error is reduced from 
18-25% to 6-10%. And, this is consistent across every topic / field which has 
been studied thus far.

Second, the world record for fastest typing speed on a mobile device in 2011 
was held by a person using a touch-screen device. I have not checked more 
recent numbers, but considering all the other studies I have analysed over the 
past few years, I would not be surprised if touch-screen devices continue 
holding speed records for data entry.

Third, there is an upper limit on how many keyboard command shortcuts a person 
is able to maintain in one's active memory. Touch-screens, on the other hand, 
with their immediate visual response to haptic activation, do not suffer from 
the same limitation.

It is comforting for us to tell ourselves that sighted people do better with 
keyboards just like we do. However, even though we know people who match what 
we wish so much to believe, research from around the world is continually 
proving the opposite to actually be the case. 

David Chittenden, MSc, MRCAA
Email: [email protected]
Mobile: +64 21 2288 288
Sent from my iPhone

> On 14 Feb 2014, at 20:13, Ari Moisio <[email protected]> wrote:
> 
> Hi
> 
> On the other hand many gamers want  precise  and immediate interaction and 
> there are plenty of game controllers for the idevices  available.  I doupt 
> anyone has said  that they just are not get used to the touchscreen:-)
> 
> Unfortunately until Apple puts any effort to general keyboard usability on 
> IOS devices these keypads do not help much except for making flicking and 
> double tapping  faster and more prddictable. Apples's 1D approach for screen 
> navigation is extremely inefficient. 2D-way, exploring the screen with one 
> finger  is faster but for efficient use one  heve to memorize all the 
> controls on every screen of any application he/she uses.
> 
> It is a bit unfair to compare mobile phones to desktop computers but even 
> sighted ones works more efficiently with keyboard than mouse/touchscreen.
> 
> Using the touch screen as blind is similar to using an failing keyboard: you 
> have every time check that the key press gets through  and it was the correct 
> key that wenth trough.
> 
> -- 
> mr. M01510 & guide Loadstone-GPS
> Lat: 62.38718, lon: 25.64672
> hkp://wwwkeys.pgp.net B784D020
> 0C1F 6A76 DC9D DD58 3383 8B5D 0E76 9600  B784 D02
> 
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