Where does Android store the snapshots used on the recent apps?

iOS takes a screenshot of an app every time it is sent to the background (maybe to show as a thumbnail when viewing recent apps. Details are available on this Stack Overflow question ). I did a little research and came to understand that the same feature is used by Android also. This Stack Overflow question deals with it. This is a security issue if these snapshots are being stored somewhere in the device and are accessible to other apps. I wanted to test this feature for my app, but I have no idea where Android stores these snapshots. I did some Googling but found nothing about the storage location. Where are these snapshots located? Is this accessible to users other than root?