Certain embodiments of liquid crystal display protection panels and liquid crystal display protection panel integrals have low reflection for outdoor applications. In some embodiments, in response to receiving a user’s request for access to an electronic record, an ERMS may determine whether the user is authorized to access the electronic document, automatically apply digital rights management settings to the electronic document to form a protected electronic record, and transmit the protected electronic document to the user. The user equipment 12 calculates, based on the received control information, a reception quality after cancellation of a signal serving as an interference signal and destined for the other user equipment 13, and feeds back the calculated result to the wireless base station 11. Movement of the sliding plate is indicated through a front of the cover plate such that the user can identify whether the cover plate is locked on a fitting or simply placed on the fitting without the lock engaged.