March 30, 2014
Apple Files Transparent Texting Patent To Help People Who Walk And Text
A user who is walking while participating in a text messaging session may inadvertently collide with or stumble over objects in his path because his attention was focused on his device's display instead of the path that he was traversing," according to the patent originally filed in September 2012.
The technology uses a smartphone's rear-facing camera to replace the text message's background with a live video feed of whatever’s in front of the user, thereby reducing the chances of stumbling over or bumping into an object while texting.
There's an app for that too that's been around for a while : Type n Walk
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