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Use encrypted disk images to password protect apps Apps
My teenage daughter loves iTunes, DVD player, games and other Mac apps -- so much so that they can interfere with her homework, music practice, chores, etc. So I limit her access to addicting applications with a password.

I use Disk Utility to create an encrypted disk image that is large enough to hold the application, then copy the app into this new disk image. I then trash the original app and any aliases, and -- with the disk image open -- make any new aliases I want (and move them outside the disk image), and also drag the app icon to the dock. Then I close the disk image.

Clicking on any of the aliases brings up the password box. Either I type in the password for her, or I have the option to change the password at will if she misses an assignment. For example, she must bring a progress report home from school every week. No progress report means she isn't given the week's new password until she brings home the report.

In the case of iTunes, I just moved the application, but left all the libraries and music files in their oringinal location. iTunes found the music files without any problem and seems to access the preferences off the hard drive as well.

[robg adds: Guess I'll need to remember this one in 12 years or so when Kylie gets to that age! On a more serious note, this solution could cause difficulties at the time of system updates -- I would recommend moving the apps back into their default location prior to running any system update, given people's past experiences with updates and relocated 'core' applications.]
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Use encrypted disk images to password protect apps
Authored by: on Nov 02, '05 07:09:59AM

Why don't you make a special user and change his password every week?

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Use encrypted disk images to password protect apps
Authored by: apenstaartje on Nov 02, '05 07:23:51AM
or better yet, see this hint on this site for limiting the time the apps can be accessed: :)

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Use encrypted disk images to password protect apps
Authored by: Coumerelli on Nov 02, '05 08:20:32AM

I did exactly this for my 'Server Apps' that I use to administer our servers at my work. I got to thinking one day - Hey, anyone who has access to my laptop can - with one click - administer my servers! yikes! in my 'Server Apps' disk image I put apps like Chickenof the VNC; Remote Desktop; Server Admin (the most vulnerable); even Server Monitor.

Of course, I take other precautions to protect my laptop, but this is just one more obstacle for someone being malicious/nosey.

It's a simple click/(secure)-password away to get to these. And in my dock I only put the disk image there so I just have to right-click or click-hold to access all the apps! Slick (I think). A good mention/hint!

"The best way to accelerate a PC is 9.8 m/s2"

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Use encrypted disk images to password protect apps
Authored by: Tom Robinson on Nov 02, '05 09:46:39AM

Of course you're missing the opportunity to teach your daughter self-control. One of these days she'll be at her own computer, which isn't controlled by you, and it will have been a much more valuable lesson if you taught her to work before playing.

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Use encrypted disk images to password protect apps
Authored by: osxpounder on Nov 02, '05 04:01:17PM

I think this dad's system is teaching her self control well enough. It's not like she's going to keep hitting that iTunes icon, every 5 minutes, because she forgot she hasn't earned permission to use it. The habit of taking care of business, before pleasure, is what's being reinforced here, I'd say.


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Use encrypted disk images to password protect apps
Authored by: adrianm on Nov 02, '05 09:53:31AM

Or use parental control features in Tiger.

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Use encrypted disk images to password protect apps
Authored by: UberFu on Dec 07, '05 12:40:14PM

I'd say you're gonna have problems down the road when you do maintenance or updates or if your system crashes and you have to rebuild, fix or repair it_

Especially without running some command line code to redirect the App locations_

One advantage of OS X is Multi-user capability_ Tiger [as mentioned by another reader] has new added parental controls_ Even without this new parent stuff - all you have to do is create a new user - give it limited access to certain applications - this can be set to limited amounts of time or even on a schedule - and these are just the basics_ But dude - yore gonna have major trouble in the long run by moving all yore applications like you have_ I caution other readers to make certain you know what you are doing before you start moving stuff_

There are reasons why the installers ask to specify the location of the application for install - not just because you know where the App is going to be - but also because all of the support files [and they are in several places] need to know where this or that App is_ And moving stuff and not telling these support files where you moved it to is not good_

A user that just sticks to Apple supplied software - won;t have as much trouble until upgrades or maintenance as saya power user running photoshop or logic or maya - where the applications require specifc support files be in exact locations and if the Application is moved then they won't know the new paths and the Apps throw up error messages telling the user so_ Maya sometimes won't even open_

just be careful people_

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