Earlier this month Micromax has launched its latest phone Canvas 4 under Canvas sub-brand. One new feature which Micromax has introduced in it was Blow Air To Unlock which means to unlock this phone either you have to blow air on screen or shake it.
This feature seem interesting, if you to wants this feature on your Android phone then its simple, one of our friend Keanu has extracted this app from Canvas 4 ROM, you can download APK from below link and install it, make sure you had enabled installation from unknown sources under Security Settings of your phone.
Once installed, just tap once to enable this app. Overall its an nice app if you are bored with your current lock screen.