Let’s get this out of the way right now–WakeMate co-founder Arun Gupta said the start-up is finally shipping all pre-orders of the long-awaited sleep tracking gadget.

Gupta said, “Our goal is to fill all pre-orders by Christmas.”

And I can even verify that the unit exists, since I have been using one for a week now.

So why all the skepticism?

Because WakeMate–which began as an idea for a smart alarm clock back in 2006 and graduated out of the Y Combinator incubator in summer of 2009–has had more than a few delays in delivering product.

To be fair, the tiny company might have bit off a fair amount to chew. WakeMate chose a solution to the sleep-tracking problem that required it to build original hardware, a main Web application, as well as apps for Apple’s iPhone, Google’s Android and Research in Motion’s BlackBerry.

Thus, Gupta describes the first version of its product as “really, a public beta.”

And, WakeMate is indeed a little rough around the edges.

For example, the unit itself–with its semi-exposed electronics and shrink-tube wrapper–looks a little more like something hacked together on top of one of the mini DIY Arduino boards than it does a finished consumer electronics device.

But if you have any experience programming microcontrollers, you might appreciate the sort of sophistication that goes into coordinating this sleepy symphony of data gathering.

(Pardon us for a minute, while I get a little über-geeky and explain how the WakeMate wristband works. If this doesn’t concern you, feel free to fast-forward a few paragraphs to get to Gupta’s predictions for WakeMate’s future.)

When you flick the small switch on the WakeMate wristband, just prior to going to sleep, the device connects via Bluetooth to your iOS, Android or BlackBerry device.

You then open the WakeMate app and enter a 20-minute window during which you’d like to be woken.

The app talks to the wristband and transmits that time information. Then, both app and device enter a sort of low-power state. At this stage, the WakeMate becomes little more than a data logger.

There is a fairly standard, solid-state, three-axis accelerometer on board, much like the one that allows you to “shake to shuffle” your iPhone.

WakeMate then spits out three fields of data–X,Y and Z axis readings–40 times per second, which are stored in its flash memory all night.

That means an eight-hour sleep cycle will produce about 3.5 million unique data points, not including metadata.

The onboard clock–for the computer, not for human time-telling–waits until your pre-selected 20-minute window and then figures out, based on frequency and severity of wrist movement, when you are closest to being awake on your own.

When that moment comes, it wakes the Bluetooth connection, connects to the phone, sounds the alarm and starts uploading the data it collected all night directly to the phone and immediately sends the information to WakeMate’s servers.

And, not to worry, if the WakeMate dies mid-sleep, the phone knows to sound the alarm anyway.

It is quite a concert that needs to be played flawlessly for connectivity and battery life to remain intact.

Impressive data tricks aside, the world in which WakeMate was conceived looked a little different from the one into which it has been born, and that means a different set of competitive realities.

When WakeMate left Y Combinator, the world of iOS device-connected movement sensors was limited to the Nike Fit, which links running performance via a shoe-attached device.

It was also a world without Fitbit, another popular activity and health tracker.

And, unlike now, there were no sleep apps claiming to do what WakeMate does.

But now, even with all the new rivals, Gupta believes WakeMate still has the edge.

He explained: “In the early days of sleep-tracking studies, doctors decided to monitor non-dominant wrist movement as part of the data collected to determine sleep state. That continues today, so there is a ton of research that has been collected over the years on correlating wrist movement with sleep cycle.”

He added that WakeMate has built an algorithm that fits the data collected by its wristband to these medically relevant sleep-cycle models and spits out graphs mapping your sleep states, your waking moments and even times when you were in deepest sleep.

“All the competing tools out there aren’t at all based on any kind of accepted research–no one is studying pillow movement or waistband movement or anything,” Gupta said. “But we know how you are sleeping when you move your wrist.”

The major questions facing WakeMate as a company revolve around what one might expect from a start-up with such a complex beta product.

Gupta said it will focus on innovating and revising its wristband, as well as doing more interesting things with the data it will collect.

“On the macro level, we’re really doing the biggest sleep study that has ever been done,” he said. “We’ll be able to tell you how people are sleeping in San Francisco versus New York, based on seasons and all kinds of things.”

Gupta added that while he doesn’t know what the next step is, WakeMate is prototyping ideas where it could correlate sleep data with other metrics about health, occupation and stress to provide a more complete tool set.

But as more companies work on the problem of digitizing the analog data of human life, the harder questions to answer are really in front of the consumer.

Gupta said he doesn’t know what a world would look like if a health insurance company could access your sleep data, or when information about your apparent insomnia is grabbed by some hacker.

What WakeMate hopes for, he said, is a world where more people have access to the kind of medical data collection that has previously only been collectable by trained technicians in controlled settings.

But more data is better, as far as WakeMate is concerned–it is hoping that its vision puts its products at the center of an all-day biometric data collection future.

BoomTown was sitting front row center–better to scare Google Mobile Product Manager Hugo Barra–at the Silicon Valley search giant’s press event in San Francisco this morning.

Google (GOOG) called together a group of reporters to discuss some “cool new features” for its Android operating system.

While many have been expectantly waiting for Google to announce a video-calling offering, to match the Apple (AAPL) FaceTime service, that was not to be here.

Instead, it was a low-key rollout of a few whiz-bang features to ooh and ahh at.

Happily, Google provided unusually delicious donuts, which was my entire reason for coming, because donuts are the pastry to the gods.

Let’s get to it:

10:05 am PT: PR dude Mike Nelson introed Barra, who said there will be two new features announced.

Ooh and Ahh.

First though, we were forced to endure yet another lecture on how important mobile is and where the future is headed that comes from every single company that throws a mobile event.

Mobile is the big show now?

Really? We had no idea this cell phone thing was going to take off! Thanks, Professor Barra!

Barra pressed on with lots of talk about MIPS (millions of instructions per second, which you should care less about, but is important).

Barra said that innovative smartphones were becoming “super-computers in your pocket.”

Again, master of the obvious!

I obviously needed to have a bite of my lovely sprinkle-laden donut to gain some balance.

10:12 am: Barra moved onto voice recognition. He asked the phone movie times in Palo Alto, Calif. and how high the Empire State Building, results which were promptly delivered.

(When my kid asked me on a trip to New York, I just said it was a badillion feet high, which also worked as an answer.)

But such technology is cool, for sure.

But Barra upped the ante by speaking four languages–Spanish, French, Italian and Japanese–to get results. It worked! Get this guy on “The Amazing Race” pronto!

Now, tricks over, it was onto the first product announcement!

And, drum roll…it was a new feature that Google is a calling “Voice Actions” in Voice Search, available today for Android 2.2 Froyo devices.

This sounded like a band name from the 1980s.

Instead, it is the ability to speak into the phone and have it instantly do things, such as sending text messages, automatic dialing and mapping and more, all via speech commands in English.

Speech recognition, natural language processing and semantic Web search–you could kind of do this before on Android, but it was neither seamless nor automatic, said Barra.

He did not say, but Voice Actions is an awful lot like Siri, the mobile app assistant start-up that Apple bought recently.

But there were more on Voice Actions, according to the adorkable demo dude Mike LeBeau, a baker’s dozen (13!) of actions, and there will be more.

He spoke into the phone a request to “Listen to the Decembrists.” Presto (and also props for the hip musical choice)!

Then, LeBeau spoke an email about some scuba diving trip. Presto!

But then he added a smiley face! Unfortunate and decidedly unhip, but presto!

After that, LeBeau kept showing off, setting the alarm clock, going to Wikipedia, doing a search for art galleries in Amsterdam.

10:28 am: Now for product announcement #2.

Barra brought up engineering manager Dave Burke, who built it in his 20 percent time.

It’s a synching feature called “Chrome to Phone.”

This sounded like a 1990s band name.

“It is a low latency way to push information to the phone,” said Burke, using Google’s browser and an app for the mobile device.

There is a little icon on the Chrome browser you click that sends a variety of stuff to the app on an Android phone.

It’s certainly helpful.

10:35 am: Onto Q&A about the two perfectly fine, though hardly earth-shaking, announcements.

Questions about the languages, bookmarking Chrome to Phone (not yet) and what’s coming next.

More!

It was all about solving “pain points” said the Voice Actions dude LeBeau.

All I know is donuts are the only thing that solves my pain points. Presto!

(And here is a post of some videos and screenshots of both Voice Actions and Chrome to Phone to enjoy.)

Though it isn’t always obvious, the technology industry sees senior citizens as a target demographic — especially where cellphones are concerned. Mobile phones could act as valuable lifelines in health-related situations and, at the very least, provide an easier way for relatives to keep in touch. Major cellphone carriers offer models that they say are easier for seniors to use thanks to big buttons and large screen fonts. But some companies go a step further. GreatCall Inc., for example, designed its Jitterbug cellphone specifically to appeal to non-techies, including — but not limited to — senior citizens. It shirks phone extras like Internet access for simplicity and includes a concierge service that does things like remotely adding numbers to the phone so users don’t have to do it.

This week, I took a look at a cellphone that was designed specifically for senior citizens: the ClarityLife C900. It’s the first cellphone from Clarity (clarityproducts.com), a division of Plantronics Inc. (PLT) that specializes in telephony (landlines and other products) for people with hearing loss. The cellphone incorporates features that are useful for someone who may be hard of hearing or using a hearing aid.

The C900 is a bulky slider phone with a top half that slides up, revealing a number keypad below; number keys each measure a half-inch square. This might be a deterrent for seniors who want their phone to look hip or slip easily into a pocket. But Clarity says the phone’s deliberately large size makes it easier to hold and use, and accommodates a roomy 2.5-inch screen.

I found the C900 relatively easy to navigate with sensible on-screen commands, though there were a few times when I couldn’t back out of a screen and had to close the slider to start over. Friends’ voices sounded loud and full when heard through this cellphone, though it lacks a speakerphone, which my grandparents could use for calling relatives and singing “Happy Birthday” together.

The $270 ClarityLife C900 has oversized buttons and a red emergency button on the back that, when pressed, calls five contacts.

The C900 costs $270 — a steep price because it’s “unlocked,” or not tied to any one carrier, but according to Clarity’s research, senior citizens don’t like to get into long-term contracts like two-year deals. This unlocked model will work on any GSM network, like T-Mobile or AT&T (T), but buyers must take the phone to a carrier’s store to get it set up and working. The phone also could be added as one of the lines in an existing family plan.

People who would rather save money than avoid contracts can get the ClarityLife for $185 tied into a one-year service deal with T-Mobile. These monthly service prices range from $19 pay-as-you-go (20 cents a minute) to $99 for unlimited calling.

The hearing-related features on this cellphone include a 20-decibel speaker and a way to notify people of incoming calls using simultaneous ringing, vibrating and a flashing green light. All the buttons on the device make loud noises, including those that control volume. The C900 is also hearing-aid-compliant, meaning it won’t cause static interference when held up to an ear with a hearing aid.

The C900 has a large, red button on its back side that, when enabled and pressed, automatically calls and/or sends text messages to a list of five emergency contacts until it reaches someone. These contacts are notified via an automatic dialing system and must press “0″ when they answer to accept the emergency call so the system knows that a real person picked up, instead of a voicemail or answering machine. Five postcards with instructions come with this phone, and can be mailed to emergency contacts so they know what to do if they receive an emergency call from the C900 phone. Users could potentially add “911″ to their list of emergency callers.

Most people will likely use the C900 in its closed slider position, revealing just four buttons at a time. These oversized buttons can scroll through contacts, call friends and end calls. A feature called “Top 10″ lets users add their 10 most frequently called numbers in the order they prefer, which is a refreshing change from the alphabetical listing that most phones use.

The C900 accepts and sends SMS, or text messages, and comes loaded with nine canned text messages including the ominous, “I don’t have much time.” An extremely loud chime sounds when messages are received or sent.

Other helpful features include a hard button on the phone’s top edge that opens an alarm-clock function, and a button for an ultra-bright, built-in flashlight. This could come in handy, though it must be held down to stay on.

Clarity says that the C900′s battery life lasts for three hours of talk time or 150 hours in standby, and that it takes one hour to fully charge after the phone’s first-time-use four-hour charge. I left my fully charged C900 powered off for a couple weeks and it still had a full charge when I turned it back on again. This could be really helpful for people who forget to charge their phone, but want to grab it to take along on a trip.

A phonebook entry titled “Customer Care” comes preprogrammed on all ClarityLife C900s. This number is answered by Clarity’s customer-service team, people who are trained to consider a caller’s specific issues, such as hearing or memory loss. The representatives speak slowly, avoid tech jargon, and can use an amplifier to make their voices louder and easier to hear.

The ClarityLife C900 is expensive, but this phone’s hearing-targeted features will be appreciated by many seniors, as will its oversized buttons and easy-to-hold size and shape.

Write to Katherine Boehret at mossbergsolution@wsj.com

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