QWERTY 26 key

The QWERTY  keyboard, designed for ten-finger typing on a typewriter layout, has too many & too small keys when used on a smartphoneAs a result, typing causes high fatigue and frequent typos.
QWERTY mini 16 key

The key size increased by 66% as the width increased by 25% and the height increased by 33%.  Additionally, the 16-key, 2-row layout allows for more
 comfortable thumb movement.
001_qwerty_vs_mini(0001).png
  The QWERTY mini fundamentally inputs the second character of each key through Double tap. The basic input is sufficient with this feature.

 However, for advanced users, it also offers a powerful feature that enables Simultaneous input of the first or second character using four simultaneous-tap keys located at the far left and right ends.

The method is described below 
 The four edge keys (W, O,  A, L) are simultaneous-input trigger keys that can be pressed instantly with the left or right thumb together with a combination key, where W, O inputs the first character and A, L inputs the second character of the combination key (e.g., O + T/G = T, L + T/G = G), dramatically reducing waiting time for repeated inputs such as TT or GG.

International patent (PCT/KR2025/099177), International Publication