Methods and apparatus are provided for attaching a first device to a second device. The method includes providing an attachment structure for attaching the first device to the second device that includes a fastener that is movable from a first position to a second position within the attachment structure, moving the first device into position to be attached to the second device with the fastener in the first position, obscuring an attachment detection window with a window barrier fixed to the fastener, securing the first device to the second device by sliding the fastener from the first position to the second position, locking the fastener in the second position, revealing the attachment detection window when the fastener is locked in the second position, and reading the attachment detection window to detect that the first device has been properly attached to the second device.