The smart design decisions Apple made to bring digital music to life (everything from iPod autosync to the FairPlay digital rights management, or DRM, technology that makes the iTunes Music Store possible) interfere with a killer photo experience. In fact, any device that attempts to handle multiple applications and interaction models will disappoint in at least one of them.
Portable devices must be simple because of their size, which means fewer buttons to do things and less screen real estate to handle options. Simplicity does not end with the device; the entire connected experience--device, application and service--must be simple. The iPod, iTunes and the iTunes Music Store are brilliant in their simplicity as a single music application.
Photos are a lean-forward activity that centers on the screen, whereas music is a mostly lean-back activity where sound is the critical component. Delivering a killer photo experience would require a complete redesign of the device, application and service to make it dead simple to take pictures, manipulate them, print them, put them in slide shows and share them.
It's impossible to do all core tasks equally well, even within a single application like music. That's why iPod's song selection is simpler and easier than its song-rating feature. The challenge is to anticipate and prioritize the tasks correctly. Conflicting priorities can lead to flawed consumer experiences--one of the biggest challenges facing devices such as the BlackBerry 7520 and the Audiovox SMT5600. The correct task prioritization depends on whether a consumer uses the device primarily as a phone or as an e-mail device.