You can't take screenshots with Acer Crystal Eye. The application is developed by Acer and it is used to take pictures and to capture videos with your Acer built-in webcam. If you want, you can take screenshots using the Print Screen button from your keyboard. Also, you can use the Snipping Tool that comes bundled with the latest Windows platforms. Personally, I use Lightshot. It is easy to use, compatible with Mac and Windows platforms and can be activated after installation using the Print Screen key.