A system comprising: a head-wearable device, comprising a first frame component which comprises an outer surface having an accessory slot and a camera port , wherein the accessory slot is accessible via an entry point on a transverse surface of the first frame component and the camera port provides a field of view of an environment for a camera lens of the head-wearable device; a second frame component forming a side-arm of the head-wearable device; and a hinge coupling the first frame component to the second frame component ; and an accessory device, comprising a slot-mating feature shaped for insertion into and removal from the accessory slot via the entry point , wherein the accessory device comprises a camera cover with the slot-mating feature arranged on an inner surface thereof; wherein the camera cover comprises a rigid inner component coupled to a flexible outer component , wherein the rigid inner component comprises the slot-mating feature and the slot-mating feature , when inserted in the accessory slot , is movable in the accessory slot between a first position that extends the flexible outer component to cover the camera port , and a second position that exposes the camera port ; and wherein the hinge is operable to move the second frame component between a first position in which the second frame component blocks access to the entry point , and a second position in which the second frame component allows access to the entry point , wherein the first position is an unfolded position and the second position is a folded position. a head-wearable device, comprising a first frame component which comprises an outer surface having an accessory slot and a camera port , wherein the accessory slot is accessible via an entry point on a transverse surface of the first frame component and the camera port provides a field of view of an environment for a camera lens of the head-wearable device; a second frame component forming a side-arm of the head-wearable device; and a hinge coupling the first frame component to the second frame component ; and a first frame component which comprises an outer surface having an accessory slot and a camera port , wherein the accessory slot is accessible via an entry point on a transverse surface of the first frame component and the camera port provides a field of view of an environment for a camera lens of the head-wearable device; a second frame component forming a side-arm of the head-wearable device; and a hinge coupling the first frame component to the second frame component ; and an accessory device, comprising a slot-mating feature shaped for insertion into and removal from the accessory slot via the entry point , wherein the accessory device comprises a camera cover with the slot-mating feature arranged on an inner surface thereof; wherein the camera cover comprises a rigid inner component coupled to a flexible outer component , wherein the rigid inner component comprises the slot-mating feature and the slot-mating feature , when inserted in the accessory slot , is movable in the accessory slot between a first position that extends the flexible outer component to cover the camera port , and a second position that exposes the camera port ; and wherein the hinge is operable to move the second frame component between a first position in which the second frame component blocks access to the entry point , and a second position in which the second frame component allows access to the entry point , wherein the first position is an unfolded position and the second position is a folded position. <EOS>