1) IF THERE ARE PARTICULAR AESTHETIC REQUIREMENTS OR SECURITY HAS TO BE DOUBLED, HOW WOULD IT BE POSSIBLE TO DESIGN USEFUL EXTERNAL PROTECTION? 2) IS IT TRUE THAT THERE IS A WARNING SYSTEM OF ATTEMPTS TO BREAK OR CUT GLASS OR WINDOWS? 3) WHAT IS THE BEST SYSTEM FOR PROTECTING A PASSAGEWAY (CORRIDORS, ENTRANCES etc.)? 4) WOULD YOU ADVISE LOCATING THE SOCKET OF THE PLUG INSIDE OR OUTSIDE THE PROTECTED AREA? 5) CAN I INSTALL MY SECURITY SYSTEM BY MYSELF? 6) IF THERE IS NO CURRENT (BECAUSE OF FAILURES OR BECAUSE THE WIRES ARE CUT) WILL THE SECURITY SYSTEM STILL BE CAPABLE OF OPERATING? 7) HOW CAN WE AVOID FALSE ALARMS THAT DISTURB THE PEACE OF THE NEIGHBOURHOOD AND DIMINISH THE CREDIBILITY OF A SECURITY SYSTEM?