The Abus KeyGarage is a great solution to deposit a key permanently outdoors. Although it is not inconspicuously, but shapely, and if you close the door in front of the number wheel, is for foreigners not at first glance be seen to what it is there. I was looking for a door lock with number code on my back entrance door, this key I had practically never with me when I needed him. Door locks with number code there as well, but are considerably more expensive. To deposit the keys by code number is a nice "workaround"