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Tag: home security

This amazing full-coverage home security system will prevent your home from burglary even if someone manages to get inside!

Background:

Residential homes are often protected from burglary by locked doors and locked windows (Figure 1), and occasionally by more substantial measures such as barred windows (Figure 2).

The issue:

However, none of that helps once an intruder breaches the perimeter of the home: once they’re inside, they are free to loot at their leisure—an unoccupied home has no further internal defenses.

Fig. 1: A cross-section of two rooms from a normal home.

Fig. 2: The traditional approach to home security is to defend the perimeter—here, we see the addition of barred windows. These can be helpful to make a home burglary-resistant, but may be a liability to the home’s residents in case of fire.

Proposal:

In order to make the inside of a home burglary-resistant without resorting to illegal booby traps, we can just create a security system that makes the interior of the home extremely unappealing to traverse.

One approach might be to have sliding metal dividers that can be raised out of the floor when all residents leave (Figure 3). This would make it nearly impossible to navigate the home while the system was armed, yet would not pose any threat to the residents in case of accidental deployment.

Fig. 3: These raise-able metal objects can telescope out of the floor when required (up to a height of, say, 3 to 5 feet), and can collapse back into the floor while not needed. If the lifting mechanism is sufficiently low power, it would even be safe to place these all over the house: even if a table / chair / person / etc was on top of one of these plus-shaped home-defense objects, that specific one would just remain in the floor even while the system was armed.

The metal-slat security system described in Figure 3 would be expensive to install, since it would require an elaborate floor mechanism. For home remodeling on a budget, see the simplified (but equally effective) proposal in Figure 4.

Fig. 4: As a cheaper but more potentially injurious alternative, giant spools of razor wire could be concealed in the walls. When the owner is away and the security system is armed, the razor wire would unspool and fill the room with deadly blades. On the owner’s return, the razor wire would coil back up, like an exceptionally dangerous tape measure. The only downside here would be if the system accidentally activated itself while you were taking a nap, and you woke up to discover your room filled with deadly razor wire. That would be a bummer!

Conclusion:

Next time you consult your architect for constructing a new mansion, make sure to keep these home-defense tips in mind.

PROS: Prevents thieves from stealing hundreds of dollars worth of televisions and cell phone chargers from your residence!

CONS: Might be over-complicated compared to the lower-tech version of just putting medieval portcullises between each room.

Fight back against “big deadbolt” with this amazing new style of home door lock! Burglars hate it!

Background:

The humble door-locking deadbolt has suffered from a severe failure of innovation and imagination in the last 100 years.

Specifically: most deadbolts have exactly two positions (Figure 1):

  1. Open (door can be opened from either side)
  2. Closed (door requires a key to open from the outside or a switch to be operated from the inside)

In some locations, especially in Europe, the deadbolt is even worse, as the closed position is:

  • 2b) Closed (door requires a key to open from the INSIDE as well). Somehow this is allowed by the fire code.

In either case, a key is required in order to lock the door, which can be annoying if you’re leaving in a hurry.

Fig. 1: A regular mechanical door lock (deadbolt) has two intuitively obvious—but primitive—settings.

Proposal:

Many door locks (but not deadbolts) also have a setting where the door can be set to automatically lock when pulled shut.

Additionally, many doors have two locks: a deadbolt and a regular door-handle lock. But there’s no reason we can’t combine the two locks into a single multi-function “dual lock” (Figure 2).

three-lock

Fig. 2: This updated “dual lock” handles both the deadbolt and door handle lock functionality, together in one convenient location.

Now the home’s occupant only needs to operate one lock when they want to open the door (instead of needing to unlock the deadbolt before using the key in the normal lock).

There’s no reason we can’t update this lock with even more options. See Figure 3 for an additional proposal.

four-lock

Fig. 3: This lock for the truly security-minded allows the door to be completely secured from the outside.

When the lock is in the lower-right position (as depicted), even the key cannot open the door from outside.

While this is not a common lock setting, the front door to the British Prime Minister’s office (10 Downing Street) works in this fashion (it can only be opened from the inside).

Conclusion:

Next time you’re thinking of doing some kind of home improvement, consider upgrading your door locks!

PROS: Simplifies the state of door locks and reduces the otherwise ever-expanding number of keys that are present in daily life.

CONS: Puts “big deadbolt” out of business.