SplitBoard: A Simple Split Soft Keyboard for Wristwatch-sized Touch Screens. Hong, J., Heo, S., Isokoski, P., & Lee, G. In Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems, of CHI '15, pages 1233–1236, New York, NY, USA, 2015. ACM.
SplitBoard: A Simple Split Soft Keyboard for Wristwatch-sized Touch Screens [link]Paper  doi  bibtex   
@inproceedings{Hong2015,
 author = {Hong, Jonggi and Heo, Seongkook and Isokoski, Poika and Lee, Geehyuk},
 title = {SplitBoard: A Simple Split Soft Keyboard for Wristwatch-sized Touch Screens},
 booktitle = {Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems},
 series = {CHI '15},
 year = {2015},
 isbn = {978-1-4503-3145-6},
 location = {Seoul, Republic of Korea},
 pages = {1233--1236},
 numpages = {4},
 url = {http://doi.acm.org/10.1145/2702123.2702273},
 doi = {10.1145/2702123.2702273},
 acmid = {2702273},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {smartwatch, soft keyboard, splitboard, text entry},
}

Downloads: 0