I too have a Stack on safe in the bedroom. This is basically to keep my bedroom guns away from my grandkids. I have a real safe in the family room. The stack on can be opened by any teenager with a long handled screw driver. To make mine a little more secure I have a dresser along side the safe, that is hanging on the wall. You have to be laying on the bed to see the safe. I cut two, 2 by 4's that are about a foot longer than the safe is wide. I put long lag bolts into the wall studs. I then painted the 2 by 4's that are attached to the wall, the same color as the wall. After the paint dried I secured the safe itself to the 2 by 4's, again using long lag bolts. The safe is at eye level. Easy to open & close and handy for jewelry, spair cash, and loaded handguns.
If your battery goes dead you must have the override key to open the safe, and get to the battery compartment. Change your battery once a year and you will never have a problem with the safe not opening.