Both Apple and Samsung latest flagship devices pack a Fingerprint Scanner on their home button. Apple introduced fingerprint-scanning technology on the iPhone5S (Touch ID) scanner then Samsung included the same technology on its Galaxy S5 home button.
The iPhone requires you to place your finger on the Touch ID button, while Samsung asks that you swipe your finger, starting above the home button and moving almost directly through the center of it. And while Apple's software suit takes into account unlocking via different angles, Samsung's is sticking to the centered approach.
The Video below compares both device's Unlock Methods.