With the Android Lollipop 5.0 Firmware Update the Samsung Galaxy S5 got a new feature: the so-called "Smart Lock". Smart Lock is a new feature which allows to set certain places as trusted sites.
These locations are then used to unlock the screen automatically and the pin or another method have not to be entered. This is especially useful if you use the pin or password method of securing the Samsung Galaxy S5.
This is automatically unlocked by Smart Lock, when you are for example at home.
Smart Lock is still in its infancy and the recognition works only about a location determined by GPS or a trusted device that is connected via Bluetooth. For example, define your own car as a trusted location for Smart Lock, when it is connected with the Samsung Galaxy S5. If you are asking yourself, where you can find Smart Lock on the Samsung Galaxy S5, then we would like to describe it briefly here:
On your Samsung Galaxy S5 with Android Lollipop open the app menu and then the settings. Tap on "Security" and scroll in the next submenu completely to the end of the list. In the section "Advanced" you will see the entry "Smart Lock". Tap on the entry and you can configure Smart Lock on your Samsung Galaxy S5.
Now you know where you can find on the Samsung Galaxy S5 the new "Smart Lock" Feature. If you can’t use it, make sure that Smart Lock is enabled in “trust Agents”.