Matthew Chalmers Marek Bell Barry Brown Malcolm Hall Scott Sherwood Paul Tennent Gaming on the edge: using seams in ubicomp games. 306-309 2005 conf/ACMace/2005 Advances in Computer Entertainment Technology http://doi.acm.org/10.1145/1178477.1178533 db/conf/ACMace/ace2005.html#ChalmersBBHST05