Bluetooth pairing request on notification bar?

As per a comment I saw in the android source code

BluetoothPairingRequest is a receiver for any Bluetooth pairing request. It checks if the Bluetooth Settings is currently visible and brings up the PIN, the passkey or a confirmation entry dialog. Otherwise it puts a Notification in the status bar, which can be clicked to bring up the Pairing entry dialog.

So yeah, depending on the BT visibility, the dialog/notification will be shown.

ninja edit: 

This may vary depending on the hardware used.

• If the device was in discoverABLE mode recently
• If the device was discoverING recently
• If the device was picked in the device picker recently