With the release of iOS 4, Apple’s iPod touch has at last become a true pocket computer. So much so, that I have taken to calling mine an “iPad nano.” When the iPad came out, I seriously considered getting one but ultimately decided against it for two reasons:

• I like the iPod touch’s “pocketability;” by slipping it into my pocket, that’s one less piece of gear I have to hold in my hand or sling over my shoulder (I am a fanatic about traveling light).
• I guessed — correctly, as it turned out — that Apple would quickly begin importing iPad functionality — particularly Bluetooth keyboard support — back to the iPod touch.

Once Bluetooth keyboard support had been officially confirmed for iOS 4, I went out and bought an Apple Wireless Keyboard, the little brother of Apple’s USB-tethered model which I have been using for a couple of years with satisfaction.

I also needed a new iPod touch, because my first-generation device could not be upgraded to iOS 4. Still, the two devices were cheaper than a new laptop.

My goal was to be able to use the combination in the field in place of a laptop, on business trips as well as vacation. After a series of ever more complex tests of the various hard- and software components, last week I took the devices with me to a meeting at which my job was to take detailed notes to prepare a summary.

As a backup, I also recorded the meeting with my trusty Olympus WS-400S pocket digital recorder; in tests I found that using the iPod touch to both record and type drained the battery faster than the anticipated three-hour length of the meeting.

So how did the iPod touch plus Bluetooth keyboard fare?

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IPhone and iPod Touch apps for creating and editing business documents have surged to the top ranks of the App Store’s popularity charts. This is good news for freelance writers who work in the field and who like to travel light.

Over the course of the next few entries I’ll be reporting on my field tests of some of my favorite apps. These won’t be full-blown reviews, but rather brief and complementary summaries of the highlights (and lowlights) of each app that revealed themselves while I put them through their paces.

First up is the long-anticipated DataViz Documents to Go for the iPhone app.

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