If you have a shared album with someone and you assign it to your Aura frame, any pictures that someone else adds will get shared to your frame, something you may not actually want. The Aura app also lets you manage settings on the frame like how often it switches images (anywhere from every 30 seconds to every 24 hours, with lots of granular choices in between) or what order to display photos (chronologically or shuffled). Since the Carver Mat is designed to be used in landscape, the photo match feature makes it so portrait pictures are displayed side-by-side, with two images filling the frame instead of having black bars on either side.