We created a marketing/landing page that showed a demo of the app (which was fake) to see what kind of response our target users would have. It tested well and definitely had a "wow" factor.
The users we targeted are the historians of the family. These are the people who take pictures and share on social networks. They make photo books and give them out as gifts.
Scott, our Head of Product, and I worked together to figure out the phases of the work. We had our MVP phase, then several more after that. Each phase had its own set of user stories, which are helpful to keep everyone focused on what's most important. The chunks or phases of work are helpful so that we can release and learn as often as possible.
A big part of this project was giving our CTO, Neil, the experience to program an augmented reality iOS app. We hadn't been through this experience as a team, and the timing was right, though time-boxed.