Just a heads up before I get into this: At the time of this posting, doing this is UTTERLY WORTHLESS. There is no functionality AT ALL in the Playbook EScreen, at least not yet.
You may or may not be familiar with unlocking the escreen on BlackBerry Smartphones. This gives you access to a lot of information and some functions which are not generally available for your BlackBerry smartphone. For more information about the BlackBerry EScreen, read my tutorial here: http://opensourcebb.com/forums/?mingleforumaction=viewtopic&t=27
RIM has included the escreen on the Playbook as well; getting to it is more difficult, and it doesn't appear to have any features yet, but it's there and if you feel like a moment of sheer geekiness you can unlock it.
First, we need to access the Help Me Screen. On your BlackBerry phone getting there is easy: you just need to hold alt + right shift + h. On the Playbook, it's a little more difficult. OK, actually without a third party app, it's impossible. But there's two different apps that will let you access the help screen. Note that you'll need to sideload these apps to use them.
In my opinion, URI is worth having for any Playbook geek; not only does it let you access the Help Me Screen, it lets you launch any URI (Uniform Resource Identifier). It also contains a game! There's a list of URI's at https://bdsc.webapps.blackberry.com/native/reference/com.qnx.doc.bps.lib_ref/com.qnx.doc.bps.lib_ref/topic/navigator_invoke.html, I'll list them at the end of this post.
If you opt to use URI, you just type escreen:// in the box in the center of the screen and hit enter. It'll open the Help Me screen right up.
If that seems too complex for you, you can also load an app called EScreen Launcher by peter9477 of CrackBerry. This one just opens the Help Me screen, no typing needed. You can download it from http://nanonet.ca/downloads/escreen.bar.
Yay, you've got the Help Me screen open. It looks pretty unfinished, but that shouldn't surprise anyone; after all, RIM really doesn't intend for us to see this, much less the escreen behind it.
Now that we've got the Help Me screen open, if you want to unlock it you need a code. There's several ways for you to get the code. First, and probably easiest, you can visit http://dl.dropbox.com/u/9610464/HelpScreen.html from your browser. Or, if you'd like an app for it, you can download and sideload an escreen key generator from http://scrapps.tk/blackberry/apps/playbook/eScreenUnlocker.bar. Yes, I realize that app says that it doesn't generate a code for your PlayBook; I thought that was the case when I made it, but I was apparently wrong.
Enter your device information EXACTLY as it shows in the Help Me screen into the escreen key generator. Because the Help Me screen is actually more useful than the escreen on the PlayBook, I recommend you only set it for one day. When your code is generated, swipe up from the bottom left corner of your PlayBook to launch the keyboard. Enter the generated code into your PlayBook Help Me screen. Do not capitalize the letters. When you finish typing it, the EScreen should launch!
Yay, your EScreen is unlocked! Now, like I said at the beginning, doing this is absolutely worthless. The menus are all empty, and trying to launch anything gives you an error. I suppose it's possible we're not doing something right though, so if you find anything different let us know!
And, as promised, here's a list of working URI's that can be launched from xsacha's URI app:
calendar://newEvent?accountId=account_ID &dateStart=YYYY-MM-DD HH:MM:SS &dateEnd=YYYY-MM-DD HH:MM:SS &attd=comma_delimited_list_of_email_addresses &subj=subject &loc=location &body=body_of_message
messages://newMessage?accountId=account_ID &to=comma_delimited_list_of_email_addresses &cc=comma_delimited_list_of_email_addresses &bcc=comma_delimited_list_of_email_addresses &body=body_of_message &subject=subject_of_message
messages://showMessage?accountId=account_ID &conversationId=conversation_ID &messageId=message_ID
mailto:comma_delimited_list_of_email_addresses ?to=comma_delimited_list_of_email_addresses &cc=comma_delimited_list_of_email_addresses &bcc=comma_delimited_list_of_email_addresses &body=body_of_message &subject=subject_of_message
vchat://URI?camera=camera_param &displayname=displayname_param &callingApplication=callingApplication_param
Co-founder and legal nay-sayer of OSBB. Owner of SCrApps Application Development, WebWorks aficionado, Open Source contributor. SCrid2000 on most blogs. I build awesome BlackBerry apps when I'm not doing legal work or spending time with my wife and two boys.
Follow me on Twitter - @GShaneC
Check out my apps in BlackBerry WorldWebsite: SCrApps.org