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Published on Mar 16, 2015
This video demonstrates the conditions in the experiments reported in the paper "VelociTap: Investigating Fast Mobile Text Entry using Sentence-Based Decoding of Touchscreen Keyboard Input", CHI 2015, Best Paper. We investigated three design aspects aimed at increasing the speed and utility of sentence-based touchscreen text entry: intermediate visual feedback, word-delimiter action, and effective keyboard size. VelociTap allowed novice users can reach a mean entry rate of 41 wpm on a 40mm wide smartwatch-sized keyboard at a 3% character error rate.