The Sun Dial phone application, developed at the Georgia Institute of Technology, uses imagery and audible alerts to notify users when to perform the daily prayers, known as salat. The phone will display an image of the sun lining up with a green circle as prayer time approaches; when the sun becomes in line with the circle, itís time to pray. Unlike similar systems ours relies on imagery, rather than text and graphs to communicate prayer times.
Wyche, S.P., Caine, K.E., Davison, B.K., Patel, S.N., Arteaga, M., and Grinter, R.E. (2009) "Sacred Imagery in Techno-Spiritual Design." Proc. ACM SIGCHI Conf. on Human Factors in Computing Systems, Boston, Mass. [PDF]
Wyche, S.P., Caine, K.E., Davison, B., Arteaga, M., Grinter, R.E. (2008). "Sun Dial: Exploring Techno-Spiritual Design through a Mobile Islamic Call to Prayer Application." Work-in-progress, In Extended Abstracts, CHI 2008: ACM Conference on Human Factors and Computing Systems, Florence, Italy. [PDF]