Samsung Galaxy Alpha - Manual (Page 47)

Motions & usability features
47
Palm swipe to capture
On the Apps screen, tap Settings → Motions and gestures → Palm swipe to capture, and
then tap the Palm swipe to capture switch to activate it.
Place the side of your hand on the screen and sweep it across the screen from the right to the
left or vice versa to capture a screenshot. The image is saved in the Gallery
→ → Album
→ Screenshots folder. After capturing a screenshot, you can edit the image and share it with
others.
It is not possible to capture a screenshot while using some apps.