The keyboard optimized for mobile typing.To encourage see-letter typing, 16 key is set as default.

B16x2 Keyboard has found out the optimum to human hand structure for mobile typing. You can switch 16 key and 32 key each other anytime. See-letter typing(typing seeing the letters being typed instead of seeing keyboard) will be naturally possible in the future when there has appeared the haptic tech to sense key location with only fingers. Even now, it is possible with 16 key. The see-letter typing itself has its own irresistible attractions, fascinating many people. If you want to try it, the most important is to (1)find and keep optimum button size for your fingers and (2)fix the location of both hands holding the phone, on basis of which you can sense the location of each key. Then you can more and more exactly strike the key. The goal is to naturally type seeing letters, not never-see-keyboard. When your fingers are tired or errors are repeated, see keyboard to refresh your sense of each key. Then you can reach quite satisfactory performance. To fix both hands, there will appear finger-concave phone cases but now you can hole the case in person. You had better fix the phone mainly by your right hand, on basis of which you can more exactly sense major keys including space on right. The average standard button size is 62×58 on basis of Galaxy phone. After mastered, the time gap for double tap is recommended to be set as fast as possible, up to 150 ms - it is different as per the phone. You can set exact button size, time gap, etc. at Tutor and take them from Tutor to keyboard. It is much more useful to work with a word prediction like "B16x2 English Prediction". From this you can see the future keyboard you can type fast in a consistent way anywhere from mobile to desktop.