The disadvantage of using two hands for text entry


Why base the whole typing method on the assumption that only one hand is available? The fact is that in 99,9 % of cases when you type, both hands are available. Should you most of the time keep your left hand in the pocket and suffer from a slower and more difficult single-hand text entry mehod (what ever that might be) because there is a chance that you might need the other hand for something at that very moment?

Even if you have a GKOS keyboard on your phone, it is still possible to browse menues and initiate/answer phone calls and do other operations by one hand. You may even have an additional legacy keyboard on the back of you device for traditional SMSing.


Possible reasons for a single hand design:

1) You need the other hand for the mouse
Not valid for GKOS because you use thumbs for pointer control.

2) You are driving a car and it is not possible to take both hands off the steering wheel
Not really valid because using your mobile phone for voice calls while driving is restricted or completetly forbidden in most coutries and sending SMS (by one hand) is even more dangerous. But with a phone using GKOS text entry you can can make phone calls with one hand only if you wish. - In addition, by attaching GKOS keys on the back of the steering wheel, you can type (if allowed) while keeping both of your hands on the wheel and an eye on the traffic. - As said, voice calls can be managed by one hand anyway.

3) You need your keys to open the door
Have a break of 5 seconds in typing!

4) You are carrying something on the other hand
Put the bag down for a minute but do not leave it unattended.

5) You are running down the stairs and need to support yourself by the other hand
Resume typing when you get downstairs or use an elevator. You are not that busy.  And if you are still carrying the bag...

6) For people with disabilities, it may never be possible to use both hands for text entry
This certainly is a valid reason to use a different kind of typing mehod.