Information like this can be used to help with features like red-eye reduction or can let you lighten things up by placing a mustache or a monocle in the right place on your face when you are in a Hangout.
Maelezo kama haya yanaweza kutumika kusaidia na vipengele kama upunguzaji wa macho mekundu, au yanaweza kukuruhusu kuangazia vitu kwa kuweka mashurubu au miwani ya jicho moja mahali sawa kwenye uso wako wakati uko katika Hangout.