An assembly comprising: a smart device (106, 606), and a system (100, 600), wherein the system (100, 600) comprises: a mount (108, 608) coupleable to the smart device (106, 606); a cover (110, 610) and a door releasably attachable to the mount (108, 608); and at least one fastener (104, 604) adapted to attach the mount (108, 608) against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount (108, 608) is coupled to the smart device (106, 606) and the cover (110, 610) is releasably attached to the mount (108, 608), the smart device (106, 606) is positioned in a seat defined by the mount (108, 608); the smart device (106, 606) is visible through an opening defined by the cover (110, 610); the at least one fastener (104, 604) defines an at least partly adhesive fastener (114, 614) coupled to the mount (108, 608), and further comprising a tab (132, 632) attached to the at least partly adhesive fastener (114, 614) and configured to be pulled to apply at least shear force to the at least partly adhesive fastener (114, 614) and thereby release the at least one fastener (104, 604) from said surface, wherein the mount (108, 608) defines an opening at least a portion of which is aligned with the tab (132, 632); and when the door is attached to the mount (108, 608), the door covers the tab (132, 632), and when the door is removed from the mount (108, 608), the tab (132, 632) is exposed by the opening defined by the mount (108, 608). a smart device (106, 606), and a system (100, 600), wherein the system (100, 600) comprises: a mount (108, 608) coupleable to the smart device (106, 606); a cover (110, 610) and a door releasably attachable to the mount (108, 608); and at least one fastener (104, 604) adapted to attach the mount (108, 608) against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount (108, 608) is coupled to the smart device (106, 606) and the cover (110, 610) is releasably attached to the mount (108, 608), the smart device (106, 606) is positioned in a seat defined by the mount (108, 608); the smart device (106, 606) is visible through an opening defined by the cover (110, 610); the at least one fastener (104, 604) defines an at least partly adhesive fastener (114, 614) coupled to the mount (108, 608), and further comprising a tab (132, 632) attached to the at least partly adhesive fastener (114, 614) and configured to be pulled to apply at least shear force to the at least partly adhesive fastener (114, 614) and thereby release the at least one fastener (104, 604) from said surface, wherein the mount (108, 608) defines an opening at least a portion of which is aligned with the tab (132, 632); and when the door is attached to the mount (108, 608), the door covers the tab (132, 632), and when the door is removed from the mount (108, 608), the tab (132, 632) is exposed by the opening defined by the mount (108, 608). a mount (108, 608) coupleable to the smart device (106, 606); a cover (110, 610) and a door releasably attachable to the mount (108, 608); and at least one fastener (104, 604) adapted to attach the mount (108, 608) against an unopened surface of a wall or other structure without penetrating said surface, wherein when the mount (108, 608) is coupled to the smart device (106, 606) and the cover (110, 610) is releasably attached to the mount (108, 608), the smart device (106, 606) is positioned in a seat defined by the mount (108, 608); the smart device (106, 606) is visible through an opening defined by the cover (110, 610); the at least one fastener (104, 604) defines an at least partly adhesive fastener (114, 614) coupled to the mount (108, 608), and further comprising a tab (132, 632) attached to the at least partly adhesive fastener (114, 614) and configured to be pulled to apply at least shear force to the at least partly adhesive fastener (114, 614) and thereby release the at least one fastener (104, 604) from said surface, wherein the mount (108, 608) defines an opening at least a portion of which is aligned with the tab (132, 632); and when the door is attached to the mount (108, 608), the door covers the tab (132, 632), and when the door is removed from the mount (108, 608), the tab (132, 632) is exposed by the opening defined by the mount (108, 608).