You can set a wallpaper on both the home screen and lock screen of a supervised iOS device. As mentioned, the device will need to be supervised. Supervision can be implemented via Apple’s Device Enrollment Program (DEP for short), but DEP will require MDM to implement supervision, and with a device enrolled and supervised via MDM, you’ll need to use the MDM to set the wallpaper. You can also use Apple Configurator 2. To use Apple Configurator 2 to set a wallpaper on a supervised iPhone or iPad, first save the image or images lo call on an iOS device. Once saved to the Apple Configurator machine, open Apple Configurator 2 and plug a device in. Then right-click on the device, choose the Modify menu and then Wallpapers… from the Modify menu. When prompted, use the Choose image… button to set the Lock Screen (the screen that is displayed when the device is locked) and the Home Screen (the background behind all your icons on each screen of the iPhone or iPad). Once you have chosen the appropriate images, click on the Apply button. You can also set lock screen text from Apple Configurator 2. To do so, use the “Custom Text…” button at the bottom of the screen and enter the text you’d like the lock screen to display when waking a device up (before you enter the passcode on the device). Then click on the Apply button. The device will install the new wallpaper (note that devices will need to be plugged in and have be unlocked to install these new options). Now the home screen should use the new image as should the lock screen.
Terminal screens can use backgrounds in OS X Lion. To configure these settings, open Terminal and choose Preferences from the Terminal menu. Then click on the Window tab. Use the Image drop down to select Choose. This brings up a browse dialog box that you can use to choose an image. Browse to the image and then click on Open. Choose images that are pretty much all dark or all light as your font should be the opposite color.
The typical school lab: We want to update an image once a quarter or once a year, deploy it and have nothing change between quarters. In Microsoft Windows, there are about as many ways to go about this as there are IT guys. Some will use Altiris or something like that to reimage the machines every night. Others will use policies to lock everyone out of everything and trust that. But what if you don’t have a dedicated IT staff and honestly don’t really have the time to deal with it in a smaller lab environment. Well, introduce Microsoft’s Steady State (it’s actually been around for awhile, getting renamed every now and then). Steady State is a nifty little product that allows someone with little IT experience to load it onto Windows (yes, including Vista) and essentially freeze every machine to its current state. Each time the box gets rebooted after that it will go right back to the way things were. But that’s not all Steady State does. It also has a nice management console for policies. There are far less policies than you would have, for example, in the local policy editor, but you don’t have to be a rocket scientist to set them. Best of all, Steady State is free and available for download here to run in your lab, hot spot, etc. This might have sounded like a commercial for Microsoft. Not at all, Steady State doesn’t seem to work well in my Active Directory environment (we don’t need to change no stinkin’ computer passwords). If I’m using this in my virtual machines is that going to be a problem? Well, no, but it’s likely going to be a bit of overkill since you can just use snapshots. Since the machine goes back to the original state, what does that mean for your user data? Well, that needs to go on a jump drive or something… So overall, Steady State has a time and a place. It’s great for labs, internet cafes, hotels, kiosks and things like that where you have a shared host that will get messed up – and when it does, you won’t care about data, you’ll just want it back to the original “state” as quick as possible. If that’s what you’re after, this is great software for something freely available. Notsomuch otherwise.