Taking screenshots on Android Honeycomb is a much simpler proposition than on older versions of the OS as it was designed from ground up with tablets in mind. Using the prior versions (<= Android 2.3), often times one had to look on the Android Market for an screenshot app designed specifically for a device and OS flavour, and to complicate matters further often required the use of root privileges to work properly. This state (more like civil war) of affairs was the norm more so on tablets than mobiles.
With Honeycomb, tapping and holding the Recent Apps screen button will take a screenshot and place it in a Screenshots album, and easily perused and viewed using the Gallery application. The Recents button appears as an icon of stacked rectangles located in the bottom left margin of the screen and to the right of the Home icon.
For those more attuned to their Android file system, the location of saved screenshot images are found in /mnt/sdcard/Screenshots. Incidentally – a symlink to the sdcard folder exists in /, so the path /sdcard/Screenshots will also work on Honeycomb tablets.
In some instances this capability may be turned off, so open the Android Settings app, tap Screen on the left hand list, and finally ensure that the Screenshot box is ticked ON. If you take a screenshot, ensure to tap the Yes option when prompted to stay in Screenshot mode.
For those using the Asus Transformer with the optional detachable keyboard, a special screen shot button exists directly above the white-circled “6″ key. If this key is pressed, a small notification dialog briefly appears when the screenshot has been saved.