One of the most highlighted features of the iPhone, since the iPhone 5S model, has been “Touch ID”. The feature involves the use of a dedicated fingerprint biometric scanner. It has been highly useful for a number of in-app logins and other security features. For the Apple Pay service, in the recent iPhone 6 and iPhone 6 Plus models, Touch ID acts as a key component for payment authentication. When Apple has updated its iOS to version 8, we witnessed Touch ID opening up to third party developers. Now Google has taken advantage of this and has integrated Touch ID for its payment service, Google Wallet.