Tag Archive for 'Handheld'

Polaroid photography is back from the dead!

Published
by
Nathan Zeldes
on June 1, 2009
in Design history
. 2 Comments

I recently saw  the movie Memento, whose protagonist had his ability to form long term memory destroyed by a brain trauma. The guy remembers his early life but any new memory fades in minutes. Unfazed, since he is out on a mission of vengeance, he compensates by writing notes to his future self on scraps of paper and as tattoos on his body; and when he meets a person he takes out his Polaroid camera, produces a photo, and – before he forgets – writes on its back notes like “Don’t believe his lies” or “He’s the one. Kill him!”

It’s a fascinating movie, and makes you think a good deal about issues of memory, mind, and self; one other thought that came to me was that if he’d been doing it today, the hero would be at a loss – because Polaroid instant photography gear production died with a whimper last year, a victim to Digital Cameras.

Apart from amnesiac vigilantes, the demise of Polaroid cameras was a loss to us all. Sure, digital cameras are great, and have added many fascinating usage models to our life (think snapping a shot on a cellphone and sending it to a friend in a jiffy), but crowding with the friends you snapped around a tiny LCD screen is a far cry from the excitement of passing a high-resolution hardcopy photo around…

Polaroid PoGo cameraSo I was delighted to see here the news of the Polaroid PoGo 5 Megapixel camera. Going with “if you can’t beat them, join them”, Polaroid is releasing this month a digital camera that produces instant color prints on its patented ZINK paper. I doubt that this will become widely used – for one thing, it’s bound to be rather expensive – but at least the instant usage model will be available to those who need it, or who just enjoy the fun. And there’s a kind of justice in it being Polaroid corporation that is making this heir to its past flagship product…

The confused calendar of my E71

Published
by
Nathan Zeldes
on April 11, 2009
in Bad design
. 1 Comment

Here then is my sleek Nokia E71, and I really like it overall. But nobody’s perfect, right?…

Nokia E71 smartphoneTake the calendar application that came on this handheld. It has a number of shortcomings (more on these later) and one amusing quirk: most of the time when you click the calendar button it displays an empty screen with the phrase (no entries) at the center. Then, less than a second later, the actual entries for the day (in my hectic life, alas, there are always entries…) show up.

Obviously there are two routines involved, one to query the database for entries, the other to display “no entries” if there are none. It would take a minute to code it so the second routine would wait for the first to complete before shooting its big mouth off… and it would take the most rudimentary QA to discover this issue.

Sloppy!

Standardization of charge indicators (Not!)

Published
by
Nathan Zeldes
on March 13, 2009
in Bad design and Good design
. 0 Comments

These days we all have at least half a dozen gadgets whose batteries require charging, and they each come with their own charger (incompatible with all the others, of course). Now, I won’t push for standardizing the chargers – can’t aim that high – but here is a more modest goal: can we please standardize the status indicator LEDs on them?

Nikon camera battery chargers

Here are two chargers that came with my two Nikon cameras, the old point and shoot and the newer DSLR. No, they are not interchangeable, even though the batteries are both Li-Ion and of the same voltage. Both have a LED indicator that blinks during charging and stops blinking when done; however, in one it stays lit when there’s no battery inserted, and in the other it stays unlit.

Nikon D40 battery charger closeupBut the bigger problem is remembering what’s what when you come back later and the light is stable. You see, in these, this means charge complete; but in my cordless shaver it means that it isn’t; there, blinking indicates a full charge. Different vendor, and they probably just flip a coin at design time…

My own solution was documenting it all on a post-it note stuck near these chargers; but then Nikon must have realized that this is an issue, because in the later camera – my D40 DSLR – they labeled the charger itself to remove any doubt. Good move!

Nokia E71: 40 years of progress in handheld devices

Published
by
Nathan Zeldes
on December 26, 2008
in Design history
. 8 Comments

I just got me a Nokia E71 smartphone. It looks like a particularly well-constructed gadget, though I reserve judgment until I’ve used it a while – stay tuned!

However, I can already share one observation: the incredible amount of technology crammed into this tiny device. A few years ago we’d marvel at its slimness if it were only a cellphone; but it isn’t only a cellphone. It’s a cellphone, and it’s a PDA, and it’s a GPS, and it’s an MP3 player, and it’s a video player, and it’s a recorder, and it’s a radio, and it’s a web browser, and it has bluetooth, and it has WiFi, and it has Infrared, and…

Nokia E71 smartphone and JRC VHF transceiver

You get the idea: this device has everything under the sun, and it’s still tiny. So for comparison, I present it here next to another 2-way communication device, a VHF transceiver made by the Japan Radio Co., Ltd., sometime in the sixties. I won this at a raffle in the annual meeting of the Israel Amateur Radio Club in the early seventies; and at the time I had to get a special license for it, it was such a big deal. It was also considered very miniaturized, since it used transistors and could be held in the hand – just like the Nokia beside it; however, this JRC was not a PDA, and it wasn’t a GPS, and it wasn’t an MP3 player, and it wasn’t a video player, and it wasn’t a recorder, and it wasn’t a radio, and it wasn’t…

You get the idea: back then it was all they could do to pack a radio transmitter and receiver into this 9 inch long box; today, the sky is the limit. And so, one can safely state, we’ve come a long way… and I can’t help but think that, with all respect to Kubla Khan and his stately pleasure dome, it is Nokia’s engineers who should be credited for giving us a miracle of rare device !

Where have all the cradles gone?

Published
by
Nathan Zeldes
on December 12, 2008
in Design history
. 2 Comments

In the early years, when portable electronic devices were considered wonderful miracles of technology, they used to come equipped with cradles. These would at a minimum charge them – the case with the “dumb” cellular phones of the day – and later also provide cabled connectivity to a computer, as in the early Palm Pilots. The cradles were meticulously designed to be functional as well as good looking; I remember a cellphone I had that had a two-slot cradle – one for the phone, the other for charging a spare battery. And it was indeed utterly convenient to plop or push the device into the cradle before bedtime and forget it until the next morning.

So where have all these cradles gone? These days, even the smartest devices charge through one cable and connect through another; connecting a cable is no major problem, but it is still less comfortable than dropping a device into a slot, and it leaves the device flopping about on one’s desk with much less dignity than the cradle afforded. Some manufacturers do make cradles as accessories, or you can get them from third party manufacturers, but they are much less common today.

Palm PDA in a Cradle and HTC smartphone with a charger's cable

Of course, a cradle is less portable; when I had my Palm V I had to buy a separate “travel kit” that replaced the cradle with a cable and plug arrangement. But when I would return home from a trip I’d be greeted by the more permanent arrangement, hooked up to my notebook’s docking station.

I was never certain whether the cradles of yesteryear were eliminated to reduce manufacturing costs, or because users preferred the flimsier cable system. What is your view on this choice?

Backlit cellphone keys – not such a good idea!

Published
by
Nathan Zeldes
on July 14, 2008
in Bad design
. 0 Comments

Have you had the experience, as a child, of discovering the optical properties of oiled paper?

I remember it well… I was an avid reader as a kid, and when a smudge of oil from some snack would get onto my books I’d notice that the translucent oily spot that looked darker than the paper would become lighter when you held the page up to the light. Before long it occurred to me that if the shade of oiled paper can go from darker to lighter as you raised the page, there must exist an intermediate position where the spot would become invisible as its shade became identical to the dry paper’s. Sure enough, so there was!

We met the hard to read keyboard on my Nokia 6230i before. Well, apparently the keyboard designers at Nokia were also trying to emulate the oil/paper experiment from my childhood…

Nokia 6230i keys in daylight

Like many handheld devices these days, the keyboard on this phone is backlit. The numbers are translucent, and a strong white light can shine through. Seemingly a great idea, for night time use. Now in bright daylight this works fairly well. The backlight gets washed out in the sunlight and although the transparent digits are of a lower contrast than a black ink would have provided, you can see them well in dark gray on silver (since the keys are silver and reflect ambient light in unpredictable ways, the contrast admittedly varies, as seen in the photos; I’ve already commented on the advisability of plain black on white for optimal viewing). But once evening starts to fall…

Nokia 6230i backlit keys in low ambient lightThe third photo shows what happens in lower ambient light. There is an intermediate light level when the transition from dark numerals on bright silver to white backlit numerals on dark silver just evens out, and the numbers become almost invisible. In fact, since the backlight source is localized, different keys reach this point at different light levels; in the photo the “7″ is in day mode, the “0″ is in night mode, and the 5 is barely visible – just like the oil spot on those old books.

Now imagine trying to distinguish these keys while driving, with the phone in a hands-free cradle, where you can’t touch-type and you need your attention on the road.

So, what can we do about this? Well, we could prefer black keys with white digits – then the day and night contrast would be the same so there would be no crossover point of invisibility. Another good idea (which I recall seeing on some devices) is to make the backlight come on only in truly low light conditions. And of course, we should test the devices we buy in all situations, not just in the bright showroom where we normally make buying decisions…

Smartphone Holsters can stop time!

Published
by
Nathan Zeldes
on March 13, 2008
in Bad design and Good design
. 0 Comments

I got this new Smartphone recently. A couple of weeks later, I find my analog quartz watch is off by five minutes. I take it to have the battery replaced; a week later, same problem: it’s a few minutes out of whack. I send it to be repaired (it’s a good quality Seiko under warranty), and switch to an El Cheapo spare watch I have, which at first seems to work fine; but in a few days, it’s also off. I try another watch – Swiss, this time – same problem duly appears after a while.

Then it hit me: these malfunctions started only after I switched phones. So I thought, maybe the device emits some radio waves that mess with the watches’ electronics? A few tests of draping the watch on the Smartphone overnight (Hey, I’m a physicist, ain’t I?) ruled this out.

PDA holster with magnets in flap

And then, I realized what was going on. The new phone came with a beautiful leather holster. This held the device horizontally on my belt at the left of my body, and closed it with a wide flap that snapped into position with an assertive magnetic click (which has a very nice feel, I must say). It was the magnet all along. This was easier to prove than I thought – hold an analog watch next to the flap, and its second hand stops immediately. With my left wrist brushing the holster randomly, you can see what was happening.

So, what can we do about this? As users, we can switch to non-magnetic pouches, ones with a zipper or Velcro closure; or we can move the device to the non-watch side of the belt. But as pouch designers, we can actually do a lot. The offending holster was designed with two magnets in the flap and two in the body, four in all, and the top ones right at the surface of the holster where the watch could touch it. Other pouches I see around have the magnet in the body, and the outer flap has a passive iron counterpart; thus, in the bad design the outside surface is magnetic (you can snap a screwdriver to it!); the better design is neutral on the surface. Take note, designers!

Alternative holsters

Invisible buttonware

Published
by
Nathan Zeldes
on March 1, 2008
in Bad design and Improvement
. 2 Comments

One evening a neighbor knocks on my door. She just got a new cellular phone, and she has a basic question: which key does she press to accept an incoming call?

Now this lady is not a youngster, but she’s used cellphones before; surely she must know that you press the key with the green handset image? Well, yes, she knows, but she can’t figure out which key that is. I think, Huh??? … But then I look at her instrument, and I see what she means. What used to be an image of a handset has degenerated into a tiny thin squiggle, similar to other tiny thin squiggles on some other keys. And yes, perhaps she could discern that this squiggle is a bit greenish, especially if she had a magnifier…

Cellular phone key comparison

The problem is all too visible in the left photo, which is of my own Nokia 6230i: the four keys at the top have identical looking thin marks, and the colors of the bottom two, though red and green, are very hard to discern at a glance (which is the way they should be discerned; especially when you’re driving with the phone in a hands-free cradle). Compare this to the other photo, from a different model. That’s what good human engineering should provide!

So, what can we do about this? If you work at a cellphone manufacturer, by all means have a word or two with your design department… I don’t, so all I could do was fix my own problem. Here is what I did to my Nokia. Problem solved.

Nokia cellphone with stickers