Google today announced a new tool developers can use to authenticate people securely while simultaneously improving the experience for mobile phone users. The company made available the new reCAPTCHA Android API as a part of Google Play Services. Google says this lets app developers and web sites better tell humans and bots apart from one another, particularly with respect to authentication. The API runs Google's new Invisible reCAPTCHA tech, which runs risk analysis behind the scenes to weed out bots and block spam and other abuses. The API is included with Google SafetyNet so mobile developers can manage both the device and user attestations from the same API. This eliminates risks, according to Google, and is more efficient across the board. For end users, the result will be a less intrusive experience when authenticating within apps and on the mobile web.