diff --git a/Device.go b/Device.go
index f257722..e74f86d 100644
--- a/Device.go
+++ b/Device.go
@@ -9,6 +9,7 @@ import (
 const (
 	DeviceInterface = NetworkManagerInterface + ".Device"
 
+	DevicePropertyUdi                  = DeviceInterface + ".Udi"
 	DevicePropertyInterface            = DeviceInterface + ".Interface"
 	DevicePropertyIpInterface          = DeviceInterface + ".IpInterface"
 	DevicePropertyState                = DeviceInterface + ".State"
@@ -35,6 +36,19 @@ func DeviceFactory(objectPath dbus.ObjectPath) (Device, error) {
 type Device interface {
 	GetPath() dbus.ObjectPath
 
+	// Operating-system specific transient device hardware identifier. This is an
+	// opaque string representing the underlying hardware for the device, and
+	// shouldn't be used to keep track of individual devices. For some device types
+	// (Bluetooth, Modems) it is an identifier used by the hardware service
+	// (ie bluez or ModemManager) to refer to that device, and client programs use
+	// it get additional information from those services which NM does not provide.
+	// The Udi is not guaranteed to be consistent across reboots or hotplugs of the
+	// hardware. If you're looking for a way to uniquely track each device in your
+	// application, use the object path. If you're looking for a way to track a
+	// specific piece of hardware across reboot or hotplug, use a MAC address or
+	// USB serial number.
+	GetUdi() string
+
 	// GetInterface gets the name of the device's control (and often data)
 	// interface.
 	GetInterface() string
@@ -79,6 +93,10 @@ func (d *device) GetPath() dbus.ObjectPath {
 	return d.obj.Path()
 }
 
+func (d *device) GetUdi() string {
+	return d.getStringProperty(DevicePropertyUdi)
+}
+
 func (d *device) GetInterface() string {
 	return d.getStringProperty(DevicePropertyInterface)
 }