Google Sleep API is being made publicly available, and this will allow sleep tracking apps on Android smartphones use less power to detect sleep patterns, the tech company said. The Sleep API will be built right into Google Play Services, and will centralise sleep detection processing. It is one the Activity Recognition APIs which, “with the user's permission, can detect user's activities such as whether a user is biking or walking”. Google has collaborated with Urbandroid, the developer of the popular alarm app, Sleep As Android, for this.As per a blog post by Google, the Sleep API is an Android Activity Recognition API that surfaces information about the user's sleep after being given permission to do so. It