Simple Beacon for Android SmartLock workaround.

Ok, just checked and yes it's easy. Power up the Puck/Pixl, pair it in the Android Bluetooth menu and it pops up a notification asking if you want to use it for Smart Lock. Tap it, follow through the menus and you're sorted.

I'd still recommend:

• Updating the firmware on the device to 2v01 - there were some changes recently that really help to improve battery life if the device is connected all the time
  
• Upload the command NRF.setServices(undefined, { uart : false }); - while this will allow other connections, it'll stop anyone actually modifying the device in any way.
  
  

Unfortunately there's no way to set a pairing pin at the moment, but there is an example of toggling discoverability with a button press here: http://www.espruino.com/Puck.js+Security#disable-bluetooth