*What*: Trevor Perrier *When:* Tuesday, May 27th at 12pm *Where:* The Allen Center, CSE 203 Please join us for this weeks Change Seminar. CSE graduate student Trevor Perrier will be presenting work done in collaboration with UW Global Health on creating an SMS messaging system and using it in randomized controlled trial for maternal health awareness in Nairobi Kenay. *Abstract:* In thistalk,I describe Mobile WaCH (Women and Child Health) - a collaboration between the Computer Science and Engineering and Global Health departments at the University of Washington the University of Nairobi and Kenyatta National Hospital in Nairobi. Mobile WaCH is a controlled experiment piloting a bidirectional SMS messaging platform for public health awareness and behavior change with the goal of improve antenatal and postnatal health. Starting in September 2013 we began registering pregnant women at Mathare North Clinic outside of Nairobi. Women are randomized into one of three groups: a control who receive no SMS messages, a one-way group who receive health messaging content only, and a two-way group who are asked direct questions via SMS and communicate with a study nurse who can reply to each message through a custom web management console. Maternal health messaging begins 20 weeks before the estimated date of delivery and continuous 10 weeks after birth. Initial findings show 30% of the two way group respond to 40% of the messages and 60% respond to 20%. I will describe design considerations for building the platform, lesson learned since the study began and plans for future development. *About the speaker:* Trevor Perrier is a second year grad student at UW working with Richard Anderson and Gaetano Borriello in the ICTD lab in Computer Science and Engineering. His interests lie at the intersections of HCI and global development with a particular focus on ICTD related education initiatives. At UW Trevor has worked on three main ICTD projects: Projecting Health which uses pico projectors to display maternal health related videos in Uttar Pradesh, India; an SMS backed for receiving monthly vaccine reports in Laos; and Mobile WaCH which is an automated SMS messaging system for maternal health education and is being deployed in collaboration with UW Global Health.