Always-on voice recognition comes standard with Qualcomm Snapdragon 80028
One forgotten feature of the Snapdragon 800 is the built-in support for always-on voice recognition. This basically means that if manufacturers decide to support this, the newest Android flagships can get the same key feature as the latest devices by Motorola (including the Moto X) have.
Always on voice recognition allows for features like Motorola’s Open Mic. This in turn makes it possible to interact with your device solely using your voice - you don’t have to unlock it first. A video demonstration is at Qualcomm’s website right below, take a look.
source: Qualcomm via Android Beat