The Greasepaint Approach

17Jun10

A Real iPhone is smaller than this, and that’s the issue

I’ve recently been involved with an iPhone project where we are doing a few custom UI controls, and it’s definitely proved a learning experience about the difference between designing for a computer screen and designing for the iPhone screen (either the current one or the upcoming iPhone 4 Retina Display screen).

One thing I’ve learned has to do with the characteristics of the iPhone screen, and how that influences User Interface Design choices. Over the years, I’ve become used to the what it takes to show a change on a computer monitor, which is to say, the degree to much you need to change the colour, shape, or scale so that it’s obvious, even if the user looks away for a second before the change occurs and then looks back.  This might apply to an object in its selected and unselected states, or the addition of something new on the screen, or perhaps the enabling or disabling of a button or other element.  At first, I thought this was due to the dots (or in this case, pixels) per inch of the iPhone versus computer monitors. Monitors are usually somewhere between 72 PPI (Pixels Per Inch) and perhaps 200 PPI on the best equipment. The IBM T220/T221 LCD monitors marketed from 2001–2005 were 204 PPI, and they probably set the standard for a while. These days, a 20-inch (50.8 cm) screen with a 1680×1050 resolution has a 99.06 PPI, and a garden variety Macbook (not the higher end Macbook Pros) has 113 PPI (Wikipedia has an article on how this is calculated).

However, the iPhone PPI is listed at 163 PPI, which although it’s on the high side, is certainly not significantly higher than a typical computer these days. The difference, then, must be the size of the screen. In the case of any iPhone screen 2G, 3G, 3Gs and 4G, it’s a 3.5 inch screen (compare that to the aforementioned 20-inch, and now we’re talking different.)

It might be obvious, but what I’ve noticed is that the amount of change you have to make in order to be noticeable is far more on the iPhone’s screen. The contrast must be greater, scaling or moving an object between one state and another has to be larger (or farther), and as a corollary to this rule of thumb,  it’s easy to miss subtle changes.  Several times during development of the app we’re working on, I had to report to the graphic designer that I was working with, that a selection style wasn’t distinct enough, or that a small detail of a button, such as a downward pointing arrow, had to be rendered with higher contrast (the UI had a lot of grey objects, and some of them had white or darker grey overlays).

I think the easy way to think about this is the analogy of greasepaint. What’s greasepaint? It’s the traditional makeup that actors wore (and has now been superseded by more modern stage makeup) that helps to compensate for both the washing out of facial features by the bright theatre lights, as well as help audience members to make out their faces, even though the actors were farther away (and hence, smaller in the eyes of theatregoers – perhaps the equivalent of being 4 or 5 centimeters tall depending on how far away from the stage they were sitting). I remember going backstage to a dressing room after the Play or Opera was over, and was always struck by how odd the performers looked before removing all of that extreme makeup, which brought out cheekbones or encircled their eyes (like a Raccoon, I though!).

So User Interface Designers working on iPhone apps, remember, the computer screen is the dressing room, and the iPhone screen is the stage. Don’t forget the greasepaint!

iPad, You Pad, We All Pad…

03Jun10

Apple's iPad

Apple’s iPad

I just got back from one of our local Apple Stores and the iPads on display had quite a throng around them.  I didn’t check, but suspect that they are probably  sold out for today. My visit got me thinking about how to explain why I think the iPad is both so successful (and this is not just a belief, it’s a fact: Apple has already sold a million of them, and this past Friday they first went on sale in the rest of the world, (including here in Canada), and why Apple has once again filled a need that people didn’t know they had in the first place.

First, How to Define It

In describing what the iPad is, it’s easy to get caught up in what it doesn’t have, since that may be what strikes one at first; There’s no keyboard, no mouse or trackpad, no monitor stand, and all of the rest of that stuff that goes along with the experience of using a computer or connecting to the Internet.  That also includes a desk or table, chair, mouse pad (or with the advent of optical mice, at least a surface for moving the mouse on) or the various power, video and network cabling, external hard drive or optical (DVD) drive. There’s also a lot of upkeep and maintenance that has been taken away from the iPad;  there’s no anti-virus package that you might be reminded to get shortly after starting it up, no place to get software except the built-in iTunes store. You don’t have to worry about defragmenting a hard disk (there is none – it’s solid state memory) or even emptying a trash can on the screen to free up disk space. While all of this does get one closer to the uniqueness of the iPad, it circles around the issue somewhat, which I’ll get into in a bit.

It’s also common to define the iPad as just a large iPod Touch or iPhone, since those are devices we are already familiar with. The fact that Apple chose to use a very similar operating system and launching screen to the one on those devices only serves to bolster the opinion that the iPad is merely a larger version of these other gadgets, something I’ve heard especially from people already familiar with those existing products. I think this is an incorrect assessment, simply because there are activities and media that are obviously far more suited to the larger form factor (like watching movies) than the smaller ones. A wall clock is not merely a large wristwatch. It’s a completely different, but related timekeeping object. But again, I think this is looking at the wrong thing.

To paraphrase the philosopher Ludwig Wittgenstein, don’t look for the word, look for the use. Rather than try and define the iPad by what it is lacking or what it appears to be based on, define it by how it’s used. It’s here, I think, that you get to the really interesting and exciting thing about the iPad, which is the user model, or the totality of the experience under which it’s used.

Many of the most revolutionary technological advances are ones that embrace a new user model. Wi Fi and laptops freed people from being tethered to a single office or desk. The new 3G networks and hardware to connect to them on a Netbook allow one to be connected to the Internet not just in a Café with a local wi fi access point but perhaps sitting outside, by a babbling brook.

The iPhone’s size and weight meant that you didn’t have to be sitting down to use it. You could be waiting in line, walking, or sitting  in a seat on the bus or a car. In fact, the iPad is the first computer  that is almost intended to be used while slouching. It’s not a desktop or laptop;  it’s a loungetop! The idea that a computer is not necessarily for work (the Desktop and Laptop computers are ostensibly for that purpose) or for communication (all of the above plus the smartphone or PDA  - Personal Digital Assistant, a term coined by another Apple CEO –  plus phone) leaves the iPad a computer for casual use, mainly media-consumption with some email and web surfing. One could certainly do work on an iPad, and no doubt, some people will dedicate themselves to using it for their work tasks, but the iPad is first and foremost, the first computer designed to be used while a user is sitting back comfortably. That’s probably the big (if not one of the biggest) deal, in my opinion.

The lack of all of those other items (keyboard, mouse, external drive, cabling) meant that there is less to distract the user from the touchscreen and the content displayed on it. People often describe the experience of using an iPad as qualitatively different; that there is no longer ‘something’ in the way, between them and the Internet. While the day has not yet arrived where we ‘jack in’ directly to the Internet, the iPad comes a step closer to that consensual hallucination.

The iPad as Harbinger of a new Age of Human Control Interfaces

It’s even more interesting to take note of the fact that Steve Jobs conceived of the iPad first, and then realized that they could use a smaller version, with some of the scrolling behavior, as a way of building a telephone and internet device/iPod. The pure idea, that of a simple, flat, sheet of glass that displays content and interacts with the user was the original idea. You could put that foundation under any other gadget. People will now expect the iPad/iPhone touchscreen interface with it’s combination of mimicry of physical scrolls and easily changed collection of buttons or controls depending on the context as the default user interface for any number of other technologies. Your car will have a small iPad screen built into the dash (someone has already installed one, according to one of the tech blogs). You’ll set your thermostat or fade your lights with one of these glass interfaces, and you’ll program your microwave, dishwasher, or even toaster with one, once the technology becomes cheap enough to use everywhere.
By jettisoning the clutter and encumbrances of computing, the iPad pulls the rest of the world into an intelligent and software-driven set of controls. Physical knobs, along with raised physical buttons, will only be used where absolutely necessary. As for the rest, we all Pad.

UXCamp Vancouver Nearly Here

02Dec09

I was going to blog earlier this week about the upcoming User Experience Camp Vancouver, which Karen Parker and I are organizing and holding at the Vancouver Film school this Saturday, but the event sold out nearly immediately, and I fear that writing about it here will be frustrating to so many who can’t get in. The venue is a good one, but it only holds a little over 100 people, and we hit that number within a week and half of announcing it in a few online areas.

At any rate, my takeaways, even before UXCampVancouver starts are:

  1. There is clearly a desire here to have a conference where local User Experience people (that includes Information Architects, User Interface Designers, Web Developers, User Testers and Researchers, Software Entrepreneurs, etc.) can meet and share information and opinions.
  2. We may need a bigger venue if we do it again
  3. Being free doesn’t hurt either. After all, a chance to talk about this stuff, plus some coffee and treats, comfy chairs and Wi-Fi is a good way to spend a late fall Saturday in Vancouver, wet and rainy or not.

At any rate, if you do want to get on the Waiting list, there is still a chance, although remote, that someone who has signed up for a slot will bow out, so give it a shot, and hopefully I’ll get to see you on Saturday.




 

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A blog about User Experience, interface design, usability, and related topics.