Daggers wrote:protection against drilling and bumping. and high security as in for business buildings.
@Daggers:
What type of "business building" ?
The security precautions one would take in a bank building or research lab would be greatly different from the ones a normal office building would require...
You seem rather hung up on a bump-proof and drill resistant lock cylinder when in typical commercial building construction one could easily defeat such additional/upgraded "high security" without even touching the lock at all...
Layered Security procedures and technologies deployed and target hardening design methods would be a much better investment than installing really fancy locks that someone who knows what they are doing wouldn't even bother to mess with...
Standard locks combined with a better than basic alarm system is a start...
Adding a security patrol force to the building is even better...
Providing access control devices to common entry doors that are used by many employees is excellent compared to issuing keys to a large number of employees...
Commercial buildings often only have full height floor to ceiling partition walls along the borders of the approved fire compartments in the structure... This is especially true in buildings with HVAC systems that use an "open plenum return"... You would never know this by looking at how neatly constructed they are and how pretty the drop ceilings appear at a casual glance... There are ways to make this arrangement more secure which aren't often built out as a measure to save on construction expenses... Some type of security mesh in wall partitions which separate one tenant occupancy from another or that separate common access corridors from tenant occupancies would prevent a rather common method involving the use of a sharp utility knife...
Compartmentalizing larger tenant occupancies into sections which are individually alarmed is also a wise target hardening decision...
Using master ring cylinders in large buildings allows for building management to maintain access to the entire building without exposing the keying system to reverse engineering attempts by tenants...
CCTV camera systems that monitor all building entry/egress points and major circulation areas (elevator lobbies, hallway intersections, stairwells) would make it difficult for someone to walk in and out to commit a burglary without being able to be identified...
Professional security personnel in the lobby to inspect employees and visitors persons and belongings (metal detectors and a package x-ray machine) would prevent most causal or opportunistic type burglary attempts... Those technologies when deployed these days are more often used to prevent an attack on the building or its tenants by armed individuals or to prevent a terrorist attack...
So let's summarize what is more important than bump-proof and drill resistant locks:
-- target hardening design techniques
-- integrated access control systems
-- identity badges worn by all employees
-- temporary self-adhesive visitor passes
-- intelligent CCTV system at all major access/circulation/congregation points
-- master ring lock cylinders and hardware
-- alarm systems installed and in use
-- professional security guard/patrol force
-- risk assessment for type of tenants/occupancies accommodated in the building
~~ Evan
