Optional encryption has been present in some devices since 2011, but, according to security experts, only few user knew how to turn the feature in. As such, Google will make the encryption take place automatically(by default). Only people who enter the device's password will be able to see the pictures, videos and communications stored on the device.
"For over three years Android has offered encryption, and keys are not stored off of the device, so they cannot be shared with law enforcement," Google said in a statement. "As part of our next Android release, encryption will be enabled by default out of the box, so you won't even have to think about turning it on."