You can keep track of what happening at your home by placing your unused android phone wherever in the room. When you log into your own Google account, you can check the pictures taken from your home. This means, you can view the safety status when you are travelling or at work or any where else.by
You can specify the frequency of the picture taking by filling in the textview and then start the button of start time lapse and stop picture taking by clicking the button of stop time lapse.
you can also take picture once per clicking on the button of take one picture