TipText (Kening Zhu) investigates new text entry techniques using micro thumb-tip gestures, specifically using a miniature QWERTY keyboard residing invisibly on the first segment of the index finger. Text entry can be carried out using the thumb-tip to tap the tip of the index finger. The keyboard layout is optimized for eyes-free input by utilizing a spatial model reflecting the users' natural spatial awareness of key locations on the index finger. Our user evaluation showed that participants achieved an average text entry speed of 11.9 WPM and were able to type as fast as 13.3 WPM towards the end of the experiment. Winner: Best Paper Award, ACM UIST 2019