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January 30, 2006
iPod Design Analysis
Design Regarding Physical Human Factors
The iPod is small. This allows it to be portable. There is a trend with iPod design: smaller and smaller. The smaller the size, the more portable the device. This makes certain activities easier. For example, jogging with an iPod nano is much easier than with a first generation iPod. Taking your iPod to work is easier if it is smaller.
The controls are designed so they can be operated with the thumb while the iPod is cradled with the remaining four fingers. This allows single-handed operation.
The casing is strong enough so that the iPod can withstand some abuse from its owner.
A remote control allows access to the controls if the iPod is stowed somewhere where it is difficult to access.
Design Regarding Cognitive Human Factors
The iPod is designed to look simple and easy to use. It is a rectangle with rounded corners. The click-wheel is the central input device. In the current generation iPod, almost all the user input goes through this singular control. The third generation iPod moved the play/pause, menu, and track forward and backward controls to their own buttons below the screen. In the next generation, they were moved back to the wheel. The current wheel has many functions. Navigating menus, navigating within a track, and volume control, to name a few. There appears to be an initiative to make the interface look as simple as possible. Putting a volume wheel on the side of the ipod might make the operation a little easier, since I often end up scanning back and forth within a track when I want to just change the volume. Here, however, the perception of ease of use is more important than actual ease of use.
The menu is hierarchical. Music is categorized in ways we categorize music: by artist, genre, album, etc.
Design Regarding Cultural Human Factors
The ipod has white headphones. These serve as something of a fashion accessory--an outside indicator that the wearer owns an iPod. In urban settings, on the subway for example, the casual observer could see the rise in popularity of the ipod just by looking at the people around him over time. Upon owning an iPod, the user became part of a club of iPod owners. Other members could be identified by the white headphones. This cultish quality is something that apple has used to its advantage in marketing its products. By owning an apple product the user takes on some of the qualities that the brand purports, such as sophistication, aesthetic appreciation, and wealth. With the headphones, the user advertises his possession of these qualities.
The iPod allows the user to have his whole music collection with him at all times. One's music collection is representative of their cultural interests and orientation. This has resulted in some strange phenomena such as users who will hold up an ipod to a stranger to show them what they are listening to. The stranger will then have to present their iPod and reveal what they are listening to. Whoever is listening to cooler music wins.
Another phenomena is people being embarrassed at parties when their iPod, which is in shuffle mode, plays something that the owner is not proud of.
I have also heard of artists using their iPod Photo to hold samples of their portfolio. Then they have a promotional tool with them at all times.
I'm not sure if these cultural phenomena were foreseen in the design of the iPod; rather, they are emergent. Future designs could take into consideration of some of these behaviors. For example, iTunes software now includes a song rating system. This is packaged with an automatic playlist creation function. The user can now quickly create a playlist with only highly rated songs. This is a potential solution to the problem of embarrassing songs coming on at a party.
Design Regarding Emotional Human Factors
The simplicity of the design is important in establishing a level of trust with the user. If the user believes that the device will be easy to use, then he is more likely to engage with the device. Thus the singular click-wheel control, straightforward interface, and simple physical form.
A common accessory to the iPod is the case. The case has a protective function, but it also allows personalization. Many users see the iPod as something they want to customize. Since the music collection that is inside the iPod is so personal, it may be that many people want that personality to be reflected on the outside of the iPod as well.