With Assistant Professor Kari Kraus in the iSchool and the campus Mobility Initiative, MITH ran a mobile scavenger hunt that used iPhones and Web 2.0 technology to educate visitors about a dramatic moment in campus history, the Great Fire of 1912. Maryland Day attendees were able to use GPS systems and online services to locate the original buildings, as well as a replica of the “Cornerstone Box,” a campus artifact, in a practice known as geocaching.