Category Archive: Interaction Design

Apple in Stereo

July 20th, 2009

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Apple is famous for their minimalist aesthetic, and infamous for occasionally taking the aesthetic too far and sacrificing usability. There’s the famous round mouse for the original iMac. There’s the symmetrical third-generation iPod remote control whose identical volume and previous/next buttons are impossible to distinguish.

While not as egregious as the previous examples, Apple’s iPod and iPhone earbuds have, to me, always suffered from just a tiny bit of this over-aestheticization. The earbuds are specific to your left and right ears, but are differentiated only by a microscopic and light-gray “R” and “L” to tell you which earbud is which. It takes a few seconds to figure out which ear each bud is intended to go into.

But for years I’ve had a solution. I’ve been using a little strip of tape to hack/solve the problem of undifferentiated iPod headphones.

A single wrap with a thin strip of tape, and viola! At a glance, or even by touch, it is now easy to tell which earbud is which: the one with the tape goes in the right ear. And design-wise it looks pretty good — simple, consistent with the Apple aesthetic, fairly subtle. Steve Jobs would probably have a fit over the asymmetry, but I think this solution is is something so obvious that every earbud manufacturer should do it, or at least something like it.

See. Feel.

May 22nd, 2009

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Touch Sight, a fascinating “camera” for blind people.

For my entire design career,  my colleagues and I have wrestled with the terminology we use to segment and focus our work, both in our careers and in our critiques. Whether it’s the “information architecture vs. interaction design” debate or the “visual design vs. graphic design” debate, our neat little linguistic boxes don’t always seem to be able to contain the conversations we have about our work.

The term “look and feel” has been particularly troublesome. Too often it is used to simply mean “visual design” — that is, just the “look” part — with the “feel” part understood as simply a polite nod to the fact that visual design has an emotional aspect.

Andrew Crow at Adaptive Path suggests that, because of this kind of abuse, “look and feel” should be discarded.

I propose that we never use the phrase “look and feel” again. Ever.

Visual design is often subjective and can be difficult to describe or judge. Often, people lack the language or understanding of the work to accurately express their opinions. Consequently, we use simple terms of the way an object “looks” or how it “feels”.

Speaking in terms of these qualities does a disservice to the design. We cheapen the value of the work by paying attention only to the superficial aspects.

I think he’s being a little hasty. How is the term “visual design”, which Andrew uses here and repeatedly throughout his essay, any better than “look and feel”?

“Look and feel” at least suggests (indeed specifically acknowledges) that the surface-level user experience involves more senses than just the visual. In contrast, “visual design” often dramatically constrains the conversation about our work, and indeed might even constrain the scope of responsibility for a person working under that title.

I’ve always interpreted the “feel” part of look and feel to mean not just the emotional aspects that are usually associated with it, but also the tactile (or seemingly-tactile) effects of how a UI moves and transforms, how it sounds, the speed and pacing of the unfolding experience, its overall voice and personality, and countless other ineffable qualities of visceral experience. “Feel” can include words and language, transitions, motion, rhythm, haptic feedback, symbolism, melody, texture, temperature, and much more.

So while I agree that “look and feel” is often abused, it is precisely the conflation of (a) the vast potential of that term with (b) simply equating it with “visual design” that is the essence of the problem. Replacing “look and feel” with just “visual design”, as Andrew seems to perhaps unintentionally suggest, would only make matters worse. The scope of the term “visual design” simply cannot contain those aforementioned ineffable aspects of user experience, which is why we cling to “look and feel”.

While I confess to using both terms every day, I do think they are often insufficient for effective design communication. But simply throwing away “look and feel” isn’t a solution. We either need a more powerful and understandable replacement for “look and feel”, or we need to do a better job investing the conversation around “look and feel” to include those ineffable qualities. We need to ensure that we can have broad critical conversations about what Christopher Alexander calls “The Quality Without a Name” (QWAN) and that we can have narrow and focused critical conversations around the technical nuances of visual and graphic design.

I’m conservatively inclined towards the second approach: evangelizing a new and broader understanding of what “look and feel” means in the universe of interaction design. But I’ll admit that, Alexander’s declaration of namelessness notwithstanding, I am quietly and subconciously thinking of new names.

[This post’s title is the a tribute to one of my favorite drone/dub bands, seefeel]

Who Watches the Watchman?

May 2nd, 2009

Let’s say you own a big building full of valuable stuff. How do you make sure that the night watchman patrolling your factory floor or museum galleries after closing time actually makes his rounds? How do you know he’s inspecting every hallway, floor, and stairwell in the facility? How do you know he (or she) is not just spending every night sleeping at his desk?

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The Detex Newman watchclock was first introduced in 1927 and is still in wide use today.

If you’re a technology designer, you might suggest using surveillance cameras or even GPS to track his location each night, right? But let’s make this interesting. Let’s go a century back in time to, say, around 1900. What could you possibly do in 1900 to be absolutely sure a night watchman was making his full patrol?

An elegant solution, designed and patented in 1901 by the German engineer A.A. Newman, is called the “watchclock”. It’s an ingenious mechanical device, slung over the shoulder like a canteen and powered by a simple wind-up spring mechanism. It precisely tracks and records a night watchman’s position in both space and time for the duration of every evening. It also generates a detailed, permanent, and verifiable record of each night’s patrol.

What’s so interesting to me about the watchclock is that it’s an early example of interaction design used to explicitly control user behavior. The “user” of the watchclock device is obliged to behave in a strictly delimited fashion.

But before I go into the interaction theory at work here, let’s look at how the watchclock system works in a little more detail. The fundamental innovation — the trick, if you will — is that the device itself is only one part of a larger, external system.

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Photo by Jeremy Brooks.

The Key is the System

The key, literally, to the watchclock system is that the watchman is required to “clock in” at a series of perhaps a dozen or more checkpoints throughout the premises. Positioned at each checkpoint is a unique, coded key nestled in a little steel box and secured by a small chain. Each keybox is permanently and discreetly installed in strategically-placed nooks and crannies throughout the building, for example in a broom closet or behind a stairway.

The watchman makes his patrol. He visits every checkpoint and clicks each unique key into the watchclock. Within the device, the clockwork marks the exact time and key-location code to a paper disk or strip. If the watchman visits all checkpoints in order, they will have completed their required patrol route.

The watchman’s supervisor can subsequently unlock the device itself (the watchman himself cannot open the watchclock) and review the paper records to confirm if the watchman was or was not doing their job.

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This is an idea with long legs. The watchclock is built like a revolver, of good old fashioned brass and steel and encased in a thick leather holster. It requires no batteries and almost no maintenance. The “guard tour patrol system” concept, too, has a timeless elegance. The mechanism itself has barely changed for a century: although some more recent models incorporate GPS and other technologies, the mechanical key-based watchclock system is still in wide usage, with many buildings still employing the same keys and the same clockwork devices they’ve used since the 1940s. It’s a genuine example of an “if it aint broke, don’t fix it” kind of technology.

From a behavioral perspective, I find the watchclock fascinating not simply because it’s a kind of steampunk GPS, a wind-up mechanical location-awareness technology. I’m further fascinated at how this holistic system of watchclocks, keys, guards, and supervisors succeeded so completely in creating a method of behavioral control such that a human being’s movements can be precisely planned and executed, hour after hour and night after night, with such a high degree of reliability that almost a century goes by before anyone thinks of ways of improving the system as originally conceived. The watchclock is a primitive form of technology-mediated interaction design and narrowly-focused social engineering: The “interface” is the whole system: The watchclock, keys, and paper records.

Designing for Control

Many in the interaction design field(s) argue that user experience design most definitely is not about behavioral control, or at least it shouldn’t be. Dan Saffer entitled his excellent book “Designing for Interaction“, the “for” being a nod to the idea that users don’t need to interact with systems in exactly the way the interaction designer intended or envisioned. Interactive systems — whether social networks, desktop apps, or multiplayer online games — often shine best when users break the rules. Systems that explicitly and deliberately give users the freedom to interact in creative and unforeseen ways are some of the most interesting and powerful kinds of interaction design.

But the watchclock is another kind of interaction design, one whose function corrals the user into a single, linear, constrained sort of behavior. The night watchman has a fundamental social constraint — the desire to not get fired from their job. This constraint allows the watchclock patrol system to work so effectively (some would say insidiously) as an interaction design instrument of control.

As a former game designer, I think it’s important to recognize that a really fun user experience will often exist somewhere between these poles of freedom and control. The player can kill the bad guys in whatever clever way she wishes, but she’s got to collect the three crystals to operate the teleporter — there’s no other way off the ship, and no other way to get to the next level. (I wonder if it’s more than a coincidence that so many systems of controlled-play in games involve the use of keys, just like the watchclock.)

Giving a user freedom to interact however they wish seems admirable in principle, but requiring the user to jump through precisely the hoops you, the designer, want them to jump through is also a powerful way to create an emotionally and intellectually compelling experience. In a practical sense, it’s also a way to make sure that the user doesn’t get frustrated or even fail to do what they really need to do.

The watchclock’s user experience isn’t compelling or stimulating, to be sure, but in my mind it is truly an archetype of the “behavioral control” side of interaction design.