This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
BluetoothDevice.vendorIDSource read-only property returns the Vendor ID Source field in the
pnp_id characteristic in the
var vendorIDSource = instanceOfBluetoothDevice.vendorIDSource
The Vendor ID Source field.
The definition of 'vendorIDSource' in that specification.