iPhone applications compiled for the Intel-based simulator can also be shared between developers. And, since the free developer program offers access to the simulator, the apps can be distributed even more widely than with the re-signing approach.

Simulator testing does not offer the full suite of device-specific capabilities. You cannot simulate the onboard camera or retrieve proper accelerometer feedback. The simulator does not vibrate or provide general multitouch input. (You can pinch, but that's about it.)

The strength of simulator-based distribution is that it lets you send out applications for early testing and feedback. Sim-only tests strengthen the preliminary design process; this approach helps solicit feedback on user interface and general program layout before the main development push gets underway.

Simulator-based apps are easy to transfer and easy to use, cutting out a layer of overhead that's needed for when you go to a full ad-hoc beta.

To distribute a simulator application, go to the Library/Application Support/iPhone Simulator/User/Applications/ folder in your home directory. There you'll find the application sandbox folders that are currently installed for your simulator. Each folder is named with a unique id (i.e. 56E66CE5...DC028F) that does not reflect the folder's contents.

You'll have to peek inside to determine which folder is which.The folder contains the application, and three sandbox directories: tmp, Library, and Documents.

To share a simulator folder compiled for 2.2.1 and earlier, you must zip up both the folder with the application and the .sb (sandbox) file that shares the same name as the folder. 3.0 and later applications do not use a .sb file. Just zip up and share the folder.

Install the shared app by decompressing its sandbox folder (and, for 2.x, its .sb file). The recipient must have installed the iPhone SDK. Drop it into the simulator's Applications folder on another machine and launch the simulator. The app should appear in the simulator, ready for testing.

• Uses for Newton in today's world: for personal and business use (e.g. connecting to company database)
• Improving Newtsync: discussion on improving OS X's Newton sync application
• Ebooks and Newton: development of PDF viewer applications for Newton
• Discussion around Einstein and new hardware platforms
• Newton programming 101 for beginners
• How to GPS with the Newton, from A-Z
• How to Network the Newton: NPDS, wifi, etc.

AdMob is one of the bigger names in iPhone ad-supported applications. They provide embeddable advertisements that developers can incorporate into otherwise free apps. Recently, third-party ad networks like AdWhirl and Tapjoy have appeared on the scene, offering to negotiate ad displays from multiple sources to increase developer revenues and increase fill rates. Yesterday, citing increased technical complaints and parameter obstruction, AdMob announced that it would no longer work with these third party mediation services.

This move affects developers who turned to dynamic advertisement solutions from third parties. AdMob will continue to allow developers to use their own solutions for maximizing ad fill rates outside these services.

Ad-supported applications are not particularly common in the App Store, where they have been relatively unsuccessful as a monetizing solution (jailbreak apps on Cydia and Icy have provided somewhat more effective results). App Store titles must compete in a huge market with delays in providing updates. The relatively close relationship between software creators and their target audience and quick update/release cycles appears to work better with ad-supported models than the more formal App Store environment.

Further details about the AdMob policy change can be found on their blog.

Joe also mentions an upcoming application, called My Eyes Only Photo, which brings My Eyes Only security to photo storage and browsing. There are screenshots of the soon-to-be-released application up on the Software Ops site. Check out the video to hear the developer's take on these apps.

If all that seems like a hassle, well, yes it is. It is, however, the proper, authorized, and recommended way to distribute pre-release software, whether for testing or reviews. But there is another way.

If you know for sure that your target audience is another developer, the process becomes way easier. You can simply compile a normal development build of your application and send a copy of that build to another developer.

That's because each registered developer has the ability to sign applications. Although the app was built to work with just the in-house devices you've registered for development, another developer can re-sign that application using the simple command-line script shown here.

#! /bin/bash 
export CODESIGN_ALLOCATE=/Developer/Platforms/iPhoneOS.platform\
/Developer/usr/bin/codesign_allocate
 
codesign -f -s "iPhone Developer" $1.app

This script uses Xcode's codesign utility to sign the already compiled version of the application. Once applied, you can then install the application through Xcode.

So is this a general distribution solution? No. And thank heavens for that; free trading of app binaries would rapidly lead to piracy. This approach allows developer-to-developer testing and collaboration only. The development signing is limited to the units you have personally registered.

If you want to try this out, follow the link at the start of this post. It leads to a testing folder I keep around and occasionally stock with software that I need tested. It also includes a copy of the script, which you must make executable (chmod 755 signit).

Ross Carter of Cocomot has a pretty cool new word processor, Pagehand, in the works. It reads and writes in PDF format, so you don't have to think twice about sending a document to anyone; they may not be able to edit it -- depending on the software they're running -- but you're pretty much guaranteed they'll be able to see it exactly the way you did on your screen. That's important because Pagehand's features are heavily geared towards making correct and beautiful typography easy for everyone, and providing many of the advanced features you'd only find in applications such as InDesign or Quark. Ross demoed the word processor for me at WWDC. Check out the video for a brief overview of the application and some of the philosophy behind it. While it hasn't been "officially" released yet, it's available for download and trial in its 1.0 incarnation.

The guys from Black Pixel stopped by to demo 2 upcoming games they're working on, both for kids: one for very young children, and one targeted at a slightly older set, which I assume ranges up to at least 30, given that it has me pretty excited. I'm neither young (by my standards), nor a gamer, but the game currently codenamed Tatooine has me ready to go running through the streets swinging my iPhone around and firing it like a phaser, baffling innocent onlookers. Check out the video after the jump, you'll get the idea.

Serguei Beloussov, CEO of Parallels, was gracious enough to sit down with us to talk about his take on the Keynote, WWDC in general and some enhancements which were announced at the Parallels shindig at Jillian's. The acoustics in the room were very echo-y and I picked up a lot of air noise and fire trucks. The rescued soundtrack has some spooky artifacts but is completely audible.

The direct access we talk about is shown in detail in the Jillian's video linked above, and is a very impressive step forward for virtualization. Continue reading for the video.