 Every day, users spend countless hours on mobile devices and join their favorite apps. But new security threats consistently put us all at risk. That's why ReCAPTCHA is always here to protect websites and mobile apps from spam and abuse. By introducing the first ReCAPTCHA Android API, mobile developers can provide a better user experience than ever before. Using the magic of machine learning and advanced risk analysis, ReCAPTCHA's Android API lets more humans pass through without interrupting what they're doing. Invisibly. If there are any uncertainties, a pop-up challenge will ensure that no bots sneak through. ReCAPTCHA means no frustration. People get to where they're going faster. And everyone stays happy. Except bots.