How to use a Bluetooth or NFC device to unlock your Android phone

How to set up Smart Lock on Android 5.0 Lollipop - It's always a good idea to use a security passcode or pattern on your mobile device, even though it can be annoying to constantly have to enter a code to unlock it. A new feature in Android 5.0 Lollipop looks to make things a little easier. When a trusted Bluetooth device or an NFC tag is in range of your phone, the security lock will be disabled.

To set this feature up you must first sync your phone or tablet with a Bluetooth device; this can be a smartwatch, a speaker or even a car. A Smart Lock notification will appear on your phone or tablet once the two devices have been paired. Tap where it says "Add as a trusted device," click on the Plus icon, select whether it is a Bluetooth or NFC device and choose the device you would like to use.

This menu can also be accessed by also going to Settings, selecting Security, followed by Smart Lock and Trusted Devices. The Smart Lock option will only be available if a security lock, such as a pattern or a passcode, is enabled on your device.

Your passcode or pattern will no longer be required the next time you turn off your display, as long as the trusted device is in range of your smartphone or tablet.

Source : cnet