Use Explore By Touch With Talkback - Asus Nexus 7 Manual Book

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Manage TalkBack volume
To change the volume settings for TalkBack, go to Settings >
Sound > Volumes. Use the slider for Music, video, games, & other
media to change the volume level.
You can also use the volume control on the right side of your tab-
let when you hear spoken feedback.
Enhance web accessibility
In order to have full accessibility support for products such as
Gmail and Chrome, you'll need to turn on the Enhance web ac-
cessibility option. Go to Settings > Accessibility > Enhance web
accessibility, and double-tap Allow. This allows apps to install
scripts that make web content more accessible.

Use Explore by Touch with TalkBack

Some aspects of Explore by Touch differ for Android 4.1.2 and
earlier.
When TalkBack is turned on, you have the option to use the Ex-
plore by Touch feature. Explore by Touch allows you to drag your
finger slowly over your screen and describes each item that your
finger touches.
TalkBack must be turned on for Explore by Touch to be avail-
able. When you turn on TalkBack for the first time, you'll receive a
prompt to turn on Explore by Touch.
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