Daydream is a new feature in Android Jelly Bean 4.2 that in essence turns your Nexus 7 or Nexus 10 into a digital photo frame, displaying a slideshow of images when idle. It can also display a clock, Google Currents articles or colours.
How to set up Daydream on Nexus 7, Nexus 10
Daydream isn't for everyone, but if you have photos of your children, pets or whatever languishing in the tablet's mass storage, it's an opportunity to give them an airing and, certainly, more entertaining than staring at a black screen. Here's how to configure Daydream on the Nexus 7 and Nexus 10.
How to set up Daydream in Android Jelly Bean 4.2
Step 1. Drag down from the top-right of the Nexus 7 or Nexus 10's screen to access the Settings menu, then tap Display in the lefthand column. Tap Daydream in the main panel.
Step 2. If Daydream is switched off, use the slider at the top of the screen to toggle it on. Daydream can display either a clock, colours, articles from Google Currents, a photo frame or a photo table when the tablet is idle. Select the radio button beside your preferred option.
Step 3. If you choose the clock option, tap the settings button beside it to choose whether you want an analogue or digital clock, and enable or disable night mode.
Step 4. In order to display photos in Daydream mode, you'll need to point the Nexus 7 or Nexus 10 in the direction of your photos. Tap the settings button next to either Photo frame or Photo table, then select the '100ANDRO' folder. You can also opt to display your profile picture and screenshots.
Step 5. To preview your selection, tap Start now at the top of the screen. The tablet will enter Daydream mode; you simply tap the back button to exit. If you're using Daydream in photo table mode, you can tap on any image to view a larger version.
Step 6. You can specify whether the Nexus 7, Nexus 10 should Daydream when docked or when charging, or both. Simply tap 'When to Daydream' at the top right of the screen and select one of the available options.