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Like the previous version of MacOS X, Lion has a Screen Sharing future built in, which is incredibly useful. Let's take a look at how it looks. I will open a new Finder window and there's my buddy Ian outside the booth and I'm going to share his screen. So I click on Share Screen and I will enter my name and password for that computer, I have an account on that computer. Click Connect. Now we have two options here. One is ask to share the display.
That means that I can go into Ian's account and look at what he's doing. The other option is I can connect to a virtual display and this means that if I have an account on that computer I can log into my own account even though Ian is using his account. Let's look at the first option. This is asking Ian permission, if I can look at his display, and sure enough he granted that permission, because this is his display. Now by default I am controlling this display. So I am going to go over to the Apple menu, choose System Preferences. Again I am doing this, not Ian.
Look in Users & Groups and here is Ian's name. That indicates that he is the user that's currently logged into this computer. He's the admin. My account is here, but it's not active right now. So I will close this out. So again, I am controlling his computer. However, I can just observe what he's doing and I will do that by going to View > Switch to Observe Mode and say Ian, why don't you do something on your Computer. So now Ian is in control, I am just watching what he's doing, and he is launching Photo Booth.
That's a really attractive look, but I'm going to take over control of that computer again. It was great to watch but now I'm back in charge. So again I can launch things if I like and be in complete control of this computer. Now I am going to quite Screen Sharing to show you another feature. Yes I really do want to quit. Now I am going to launch Screen Sharing yet again. I will enter my username on that computer and my password. Now note if I didn't have an account on that computer, I can still get in but what I have to do is enable the By asking for permission option. This would then send a message to Ian saying, do you mind if Chris shares your computer screen? He would then grant permission and even though I don't have an account on that machine, I could then screen share with him.
But in this case I do have an account, I click on Connect and now I will select the second option, Connect to a virtual display. What happens here is I am presented with a login screen because my account is not yet logged-in on that computer. I select my name, enter my password, press Return. And now I am logged into my account. As you could see the desktop is different than it was before. And this is my account and I can prove that by going to the Apple menu > System Preferences > Users & Groups and you will see here that I'm now the admin of this computer.
My name is first. That indicates that I'm in my account. Next down is Ian and you can see that he is in his account as well because you see little orange circle with a checkmark next to it indicating that he's logged into his account. So at this moment we are both using the same computer working in our separate environments. I will close this. So what good is this? Well that's a lot of fun for example, but it's one-way sharing of resources of a single computer. So if you have one computer that two people normally work at you don't have to force one-person to log out, so another person can use it remotely.
In this case I can be at home, Ian can be somewhere, he can be working on the computer at one point. I can then log into my account and I can work on that same computer if I need to. I think that this is really cool feature and something that people are going to find really valuable. So I will quit Screen Sharing. Quit, really quit, close this window, and there's your look at Screen Sharing under Lion.
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