Enumerate nearby unpaired Bluetooth LE devices

Hi!

I'm currently developing and app that needs to find all nearby Bluetooth LE devices and show them to the user. The Bluetooth LE Devices have not been paired with the user's phone. Is it possible to do this? I've been trying with:

DeviceInformation.FindAllAsync

But no luck! I'm using a Windows Phone 8.1 Cyan device with Bluetooth LE support. The fibit app seems to be able to discover nearby unpaired wristbands.

Thanks!