In a study released on Thursday by two industry groups, the Airline Passenger Experience Association and the Consumer Electronics Association, as many as 30 percent of all passengers said they had accidentally left a device on during takeoff or landing. About 67 percent said they had never done this, always ensuring that their electronics were turned off. Four percent were unsure.

In another segment of the study, passengers were asked if they turn their devices to “off” when instructed to do so by the pilot. Although 59 percent of passengers said they do fully turn their electronics off, 21 percent said they often simply switch to “airplane mode,” which disables the main radios of a gadget. Five percent sometimes adhere to the rule. And others were either unsure or do not carry electronic devices on a plane.

It is my hope that the FAA will work, with the FCC and other federal agencies where appropriate, as expeditiously as possible to implement common sense changes to today's restrictive regulations on in-flight use of PEDs that better reflect new technologies and the changing role these devices play in Americans' daily lives. While the agency can and should use existing authorities to allow for the broader use of PEDs, I am prepared to pursue legislative solutions should progress be made too slowly.

In October, after months of pressure from the public and the news media, the F.A.A. finally said it would begin a review of its policies on electronic devices in all phases of flight, including takeoff and landing. But the agency does not have a set time frame for announcing its findings.

An F.A.A. spokeswoman told me last week that the agency was preparing to move to the next phase of its work in this area, and would appoint members to a rule-making committee that will begin meeting in January.

A year ago, when I first asked Les Dorr, a spokesman for the F.A.A., why the rule existed, he said the agency was being cautious because there was no proof that device use was completely safe. He also said it was because passengers needed to pay attention during takeoff.

When I asked why I can read a printed book but not a digital one, the agency changed its reasoning. I was told by another F.A.A. representative that it was because an iPad or Kindle could put out enough electromagnetic emissions to disrupt the flight.

Yet a few weeks later, the F.A.A. proudly announced that pilots could now use iPads in the cockpit instead of paper flight manuals.

The F.A.A. then told me that “two iPads are very different than 200.”

“Electromagnetic energy doesn’t add up like that. Five Kindles will not put off five times the energy that one Kindle would,” explained Kevin Bothmann, EMT Labs testing manager. “If it added up like that, people wouldn’t be able to go into offices, where there are dozens of computers, without wearing protective gear.”

Bill Ruck, principal engineer at CSI Telecommunications, a firm that does radio communications engineering, added: “Saying that 100 devices is 100 times worse is factually incorrect. Noise from these devices increases less and less as you add more.”

In September, a passenger was arrested in El Paso after refusing to turn off his cellphone as the plane was landing. In October, a man in Chicago was arrested because he used his iPad during takeoff. In November, half a dozen police cars raced across the tarmac at La Guardia Airport in New York, surrounding a plane as if there were a terrorist on board. They arrested a 30-year-old man who had also refused to turn off his phone while on the runway.

In 2010, a 68-year-old man punched a teenager because he didn’t turn off his phone. Lt. Kent Lipple of the Boise Police Department in Idaho, who arrested the puncher, said the man “felt he was protecting the entire plane and its occupants.”

That's likely to become more of an issue as the computing power of implanted devices increases, the data becomes richer, and as people start to monitor and even control aspects of their health through software running on smartphones, say. Naturally, they -- and the coders writing apps -- will want full access to the data pouring out of any equipment connected to them or inside them.

As Campos asks:

"Who owns the data collected in my body?" he says. "Should it benefit the company, so they can use it for post-market surveillance? Or me, so that I can make better decisions about my health?"

It's the same kind of question that people are increasingly asking about Google and Facebook, but this time it might literally be a matter of life or death.

Follow me @glynmoody on Twitter or identi.ca, and on Google+

First, small, portable computing platforms were hot. No surprise to anyone, but Netbooks were all over the show, in creative new formats, layouts, OSes, and component make-ups. This sector has already proven to be a consumer favorite, and the OEMs are responding in force. Tablets, slates, and new formats were being shown by a variety of vendors hoping to get the jump on Apple, notably Microsoft in what could be described as an anemic Keynote by Ballmer.

Second, e-Readers were exploding out of the booths. There were new e-Readers on display from Huawei, Spring Design, Plastic Logic, Entourage eDGe and many more. Many analysts predict growth in the e-Reader sector, largely predicated on the notion that the readers use crystal clear e-ink screens, which greatly extend battery life, are easier on the eyes, and can be read indoors or out. Devices with standard LCD screens like Netbooks or iPhones churn through batteries too quickly to pose a direct threat to e-Readers. Thus, for now, this sector is seen as "protected" from the cheaper or more versatile Smartphones, Netbooks and tablets.

Third, there was an immense amount of innovation in screen configurations across Netbooks, TVs, laptops, etc. We saw two-screen laptops, touchscreens, tablets, double screen e-Readers, MEMS displays from Qualcomm, and more. Among the cool new screen technologies was one from PixelQi (discussed at GigaOm). The PixelQi (pronounced Pixel Chee) screen can operate in two modes: one which is like a standard backlit LCD laptop screen, and a second that closely resembles the e-ink of the Kindle. In this high-resolution, black-on-white mode, power consumption is cut to ~1/3 of a regular laptop screen. This mode also is easier on the eyes, and can be read easily in sunlight. PixelQi technology is cool in and of itself, since, as processors get more efficient, screens are becoming a relatively larger portion of the power budget - any savings here could have a dramatic impact on battery life. One could switch a laptop into "ink mode" and extend battery life at the expense of color.

I think you see where I'm going. If I were Jobs, I'd launch a tablet that used the iPhone OS, had access to the app store, iTunes, Safari browser...AND had an 8-10" dual-mode screen. Such a tablet could suck the air out of the room for e-reader makers. A company like Apple has the clout to get access to a wide range of book content, including the NYT bestseller lists. If so, Apple's tablet could quickly end the dedicated reader era. Consider a tablet that offers the value proposition of an e-Reader, a Netbook, GPS, and 100k apps. That's the kind of product that could justify a price premium over a $300 Netbook or Reader.

Either way, I see the dedicated reader market fading in the future, much as PDAs did. Not that they're not in demand, but the dedicated Readers will evolve and be subsumed into general-purpose tablets, or will be beaten by tablets that can do more. If it's not Apple or PixelQi next month, it's going to be somebody else within a year. Either way, buyers win: we're all going to benefit from the active innovation in the screen/display category, and more functional devices with better battery life.