Peepholes (wide angle viewers or fish-eye lens) let you know who's knocking at your door before you open it. Otherwise you might blindly open up – and plunge into the nightmare of a Push-In.
Of the more than 7,000 home invasions or burglaries daily in the U.S. alone, roughly half are Walk-Ins through unlocked doors! Running a close second are Push-Ins when a homeowner blindly opens the door to a criminal. Using a little caution can make a huge difference if you use these:
• Insist that all family members always check before opening the door.
• Locate it about five feet high from the indoor floor. Keep a step-stool nearby so kids can use it (and open the door only with your permission).
• Insist on a deliveryman's photo I.D. from his employer pressed to your window. Look for a company vehicle (not with a magnetic sign). Then call his company to check (get the phone number from the phone directory, not from him). See Home Security - Scam-In.
• Know that some criminals block your view with their hand or stand out of sight, hoping to fool you into opening anyway.
• Also use a doorbell intercom for all exterior doors to more easily talk with visitors (or just listen to them making plans) without opening your door. You'll find inexpensive models at Home Intercom System.
Door-chains ("chain-locks" or "chain door
interviewers") are too weak to protect you. They allow partial door opening to
"interview" a visitor, BUT they're far too flimsy to stop a kick-in or an aggressive Push-In.
Get rid of these flimsy "security products." Newer "high-tech" types - such as spraying indelible ink on an invader as he bursts
through to attack you anyway (or others with equally foolish ideas) -
are still not nearly good enough. You're much safer with a Home Intercom System.