Anthony Gray (but you can call him Tony) has a long history working in tertiary education, where he's provided technical and systems support for academic and research staff, and some very smart students. He loves to teach, with his favorite subjects being Operating Systems, Computer Graphics and Animation with OpenGL, and most recently Mobile Development for iOS. In his spare time, he writes software to scratch his own itch, some of which is available at squidman.net. Secretly he pines for the days when you could hand-code assembler for your 6502, and occasionally writes emulators so he can do just that. Jon Manning is a world renown iOS development trainer and writer, game designer and mobile software engineering wizard. He has co-authored two books on mobile development and enjoys re-implementing such things as OpenGL and the Objective-C runtime (in his spare time). Jon is also a researcher in Human-Computer Interaction working towards a PhD.

Paris Buttfield-Addison is a mobile app engineer, game designer, and researcher with a passion for making technology simpler and as engaging as possible. Paris recently submitted a PhD investigating how people use tablets for information management.