The average smartphone users often unlocks their device at least a hundred times a day and that could be an unnecessary routine while using their devices in a safe place. That is why Google has proposed the option to add trusted places to Android 5.0 Smart Lock.
Android 5.0 Smart Lock has two existing options; trusted faces and trusted devices. This new automatic location-based unlocker will bypass the usual lock screen when it detects a trusted face or device. Alongside, users can set numerous trusted location and it works without any lagging issues when accessing the phone.
Smart Lock update comes as part of the latest version of Google Play Services. Users with the latest Google update and the best software will soon receive this update.
Source: The Verge