My Profile Kellen Petersen Kellen is a PhD student in Mathematics living in New York. Recently married, Kellen enjoys technology and is excited to share all the new technological tools for Mormons that are coming out. Connect: Twitter, Google+Job: PhD Student.Calling: 2nd Counselor, Sunday School Pres. person About create Posts comment Comments What are QR Codes and How Can You Use Them?How to Get Great Content for Your Favorite Mobile Reading DeviceDownload Church Publications in Audio FormatRequest Your Priesthood Line of Authority by Email