Motorola Camera update lets you snap a picture with the volume button

Motorola has updated several of its apps in the Play Store this week, and the latest to grab a new version number is the Motorola Camera app. The changelog is nice and simple — you can now take pictures on your Motorola phone by hitting the volume key on your phone or attached headset. This is a feature that other phones have had for a good long while, and it isn't a perfect stand-in for a dedicated camera button, but it can't hurt to have another way to snap a picture for the times that call for it.

source: androidcentral