To check the locking condition of a door in a visualized image by providing a holograph window display which displays the locking conditions using optical signals in a lock mechanism of a remote-controlled door lock and unlock device.

First and second LED arrays 15a, 15b are optically connected to the surface of an automobile window 13 using prism input connectors 16a, 16b. A control electronic device 21 is constituted so that the arrays 15a, 15b generate first and second optical output signals 23a, 23b respectively in response to signals 12a, 12b from a lock mechanism 18. Hologram decals 17a, 17b for indicating first and second visible messages indicating the condition of the mechanism 18 in response to the signals 23a, 23b of the arrays 15a, 15b are attached to the surface of the window 13. The hologram decals are preferably of reflection type, however, they may be two or three-dimensional.