How to place a safe inside the bedroom cabinet and how to design it better?

Bedroom closet backboard against the corner of the wall to leave a safe location, in the wall first pre-buried steel plate after using welding to fix the safe or with expansion screws into the wall and then fix the safe, while adding a concealed door, so that thieves are difficult to find, but also can not move the safe. The side of the door opens against the wall, because the door slit against the wall, thieves will not be able to find the force point, it is difficult to pry open the door lock. In addition, you can also install an alarm on the safe, preferably connected to cell phones and other communication tools, in the event of theft, you can promptly report to the police.