South Korean tech giant Samsung has announced that on Google's new Android mobile operating system, Marshmallow, that users will be able to authenticate Google Play purchases with their fingerprint.Previously, Android users on Lollipop were only able to use their fingerprint sensors to unlock phones, although numerous apps have also tapped into the feature.In May, Google revealed that it was working on a native fingerprint authentication solution for Android that would be embedded in all devices using the mobile operating system, according to tech media. Known previously as just “M”, this project has since been named Marshmallow.Any app could plug into and use the planned fingerprint API, meaning users could authenticate Google Wallet or a Play Store purchase with a fingerprint.In January, Motorola's former CEO told British press that Google's Nexus 6 would have had a fingerprint scanner if Apple hadn't acquired the company responsible for its biometric tech.