An assembly comprising: a smart device , and a system , wherein the system comprises: a mount coupleable to the smart device ; a cover and a door releasably attachable to the mount ; and at least one fastener adapted to attach the mount against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount is coupled to the smart device and the cover is releasably attached to the mount , the smart device is positioned in a seat defined by the mount ; the smart device is visible through an opening defined by the cover ; the at least one fastener defines an at least partly adhesive fastener coupled to the mount , and further comprising a tab attached to the at least partly adhesive fastener and configured to be pulled to apply at least shear force to the at least partly adhesive fastener and thereby release the at least one fastener from said surface, wherein the mount defines an opening at least a portion of which is aligned with the tab ; and when the door is attached to the mount , the door covers the tab , and when the door is removed from the mount , the tab is exposed by the opening defined by the mount . a smart device , and a system , wherein the system comprises: a mount coupleable to the smart device ; a cover and a door releasably attachable to the mount ; and at least one fastener adapted to attach the mount against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount is coupled to the smart device and the cover is releasably attached to the mount , the smart device is positioned in a seat defined by the mount ; the smart device is visible through an opening defined by the cover ; the at least one fastener defines an at least partly adhesive fastener coupled to the mount , and further comprising a tab attached to the at least partly adhesive fastener and configured to be pulled to apply at least shear force to the at least partly adhesive fastener and thereby release the at least one fastener from said surface, wherein the mount defines an opening at least a portion of which is aligned with the tab ; and when the door is attached to the mount , the door covers the tab , and when the door is removed from the mount , the tab is exposed by the opening defined by the mount . a mount coupleable to the smart device ; a cover and a door releasably attachable to the mount ; and at least one fastener adapted to attach the mount against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount is coupled to the smart device and the cover is releasably attached to the mount , the smart device is positioned in a seat defined by the mount ; the smart device is visible through an opening defined by the cover ; the at least one fastener defines an at least partly adhesive fastener coupled to the mount , and further comprising a tab attached to the at least partly adhesive fastener and configured to be pulled to apply at least shear force to the at least partly adhesive fastener and thereby release the at least one fastener from said surface, wherein the mount defines an opening at least a portion of which is aligned with the tab ; and when the door is attached to the mount , the door covers the tab , and when the door is removed from the mount , the tab is exposed by the opening defined by the mount . <EOS>