He is one of the engineers who founded the Samsung KNOX product and an early adopter of SE for Android. He has made contributions to several open source projects, such as SE for Android, the Android Open Source Project, the Linux Kernel, CyanogenMod, and OpenSC. His recent interests have taken him to Smart Card technologies and the virtualization of smart cards. In his spare time, he works with Dr. Confer on the Miniat project (http://www.miniat.org), a virtual, embedded architecture simulator.