Android has released a new sample demonstrating how to securely integrate its systems with compatible fingerprint readers.In a blog post, Android revealed how the Android Fingerprint API protects user privacy by keeping users' fingerprint features carefully contained within secure hardware on the device.The code sample “AsymmetricFingerprintDialog” demonstrates how to use an asymmetric key, in the context of authenticating an online purchase.Android also plans to provide protection for application developers in its system, with assurances that a user's fingerprint has been positively identified before providing access to secure data or resources.This should protect against tampered applications, providing cryptographic-level security for both offline data and online interactions, said the mobile OS' developers.”When a user activates their fingerprint reader, they're unlocking a hardware-backed cryptographic vault. As a developer, you can choose what type of key material is stored in that vault, depending on the needs of your application.”Earlier this month, Google detailed a list of minimum requirements for manufacturers hoping to attach fingerprint sensors to its android operating system.