Those of you who want something a little classier, though it’s by no means as necessary as on older PowerBooks, should check into the numerous leather or cloth screen protectors out there. In a move sure to please cheapskates everywhere, Apple has begun shipping new ’Books with a sheet of plastic foam between the screen and keyboard I recommend you save this and use it to prevent any possible “keyprinting” on the screen.
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At the least, the AlBooks are much better than previous models, especially the TiBooks, which were highly susceptible to transfer of skin oils from the keyboard to the screen. With the AlBooks, Apple seems to have returned to the days of the Wall Street, when laptop keyboards didn’t leave “keyprints” on the screen.
Suffice it to say that the SMS has the “cool factor” going for it, and it seems to work as advertised. Thus far unfulfilled is a suggestion for an Etch-a-Sketch-like Trash, which sounds incredibly cool, if somewhat silly. Enterprising programmers have already developed some intriguing proof-of-concept programs, a fairly complete input framework that lets you use it like a mouse, an iTunes controller, and an interesting arcade-type game. Because the SMS is software-accessible, it has been the subject of perhaps the most hacking since the Color Classic. The innovative feature in this case is Apple’s placement of the sensor on the motherboard, rather than inside the hard disk. Similar in purpose to IBM’s widely advertised hard disk motion sensor (in the memorable commercial where the guy intentionally knocks a laptop off the coffee-shop counter, only to realize the laptop isn’t his friend’s), the Sudden Motion Sensor detects acceleration and deceleration of the laptop and parks the heads on the disk drive to minimize damage. Apple’s advertising refers to it as the Sudden Motion Sensor, so that’s what I’ll use here. The SMS is also called the “Apple Motion Sensor” in some cases, and has yet another name in the Darwin source code. The other major new feature, which has thankfully been entirely problem-free thus far, is the Sudden Motion Sensor. As usual, individual skin chemistry and ambient humidity play a big role in how serious the problem is. This usually presents itself during window resizing, where the window will “fall off” the cursor, and a click will be issued at the end of the cursor’s path (where the window resize widget would have been dragged had it not “fallen off”).
The most annoying problem, which the official fix has thus far failed to remedy, has been occasional loss of “contact” between the trackpad and my finger, causing the cursor to release during drags. The 15" model reviewed for this article has been largely problem-free, though the button is noticeably stiffer and scrolling is noticeably jerkier than on the TiBook it replaced (or the Wall Street before that). Apple has acknowledged the problem, though a permanent fix has yet to be discovered or disclosed.
There are countless reports of people having problems with jumpy cursor movement, overly stiff buttons, trackpad tapping, etc. While scrolling is incredibly improved, basic mousing has taken a step backwards in reliability. Unfortunately, the trackpads have had their share of problems.
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The scrolling features of the new PowerBooks are available for most late-model iBooks and PowerBooks through the use of iScroll2, a free replacement trackpad driver by Daniel Becker based on the Darwin trackpad driver. Forget scroll wheels, scroll buttons, or any other scroll add-ons Apple has once again introduced an amazingly simple, intuitive, and powerful feature to the market. While it may seem trivial to people who have never used it, after spending just one afternoon with it, you’ll be wondering why every laptop in the world doesn’t have this feature. The gotta-have-it new feature is the new scrolling trackpad, letting you use two fingers on the trackpad to scroll and pan about the screen.
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