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Some restricted keys come with an ID card that authorizes the card holder to get keys made.  This is less secure than key duplication that is controlled at the factory, but it is a step up from keys that anyone can get made at Home Depot.

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The theory behind the keyway is to let only certain kinds of keys in and keep all others out, and keyways do this with varying amounts of success.  A variation on this idea is the “sectional” keyway system in which keys of slightly different keyways are allowed to “pass” into the cylinder keyway.  See the diagram of the Schlage hierarchy of keyways below:

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Even common hardened tool steels in the Mold and Die industry present unique challenges. Take for example D2 tool steel that can be heat treated to 60-62 HRc.

In order to use a bump key to open a lock, the key bumper needs to have the right blank.  You cannot bump a cylinder with a bump key that has the wrong keyway.  It won’t go in.  Therefore, having a lock that has a somewhat rare keyway is a very easy and inexpensive way to make unauthorized entry by key bumping difficult.  Most of the people out there bumping locks open are not the brightest bulbs in the lighting fixture.  Challenge them with a hard-to-identify keyway and they will most likely be defeated.

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Keys can be stamped with the words, “Do Not Duplicate” or “Property of [insert name of institution or government agency here],” and that may stop some honest people from getting the key copied.  The term, “restricted key,” however, usually means factory restricted keyway, and a factory restricted keyway can effectively inhibit unauthorized key duplication.

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Another way factories protect keyways is to keep records of who is using what keyway and where.  Many companies have restricted key programs – Schlage Primus, Kaba Peaks and Medeco are a few examples.  Factories may keep signatures of end users on file.  In this case, requests for restricted products must be accompanied by a document that is signed with the correct signature or the factory will not release the product.

The keyway is the shape of the keyhole of the lock cylinder into which the user inserts the key.  The keyway is designed to allow only keys of the correct shape to be inserted such that, when properly made, they will align the pin tumblers properly and operate the cylinder.  If you view a key from the tip, you can see how the shape of the key corresponds to the shape of the keyway.

Unfortunately, some key duplicators use the “L” keyway key blanks to cut keys of any sectional keyway they may currently not have in stock.  This shoddy practice degrades the security of a master key section that depends on sectional keyways for security.

The keyways shown at the bottom of the chart are designed to fit in only one keyway.  Unlike the keyways shown in the top two rows, actual locks have the keyways in the bottom row.  The keyways shown in the second row could be called sub-master sectional keyways because keys cut on blanks of these keyways will each pass several of the keyways in the bottom row.  Keys cut on the “L” keyway shown at the top of the chart will pass all of the keyways below it.  This keyway is designed to be used only at the level of Master or Grand Master key.

Because we are a major distributor for some products, we price very aggressively by sacrificing profit margin whenever we sell in bulk. The philosophy to offer quality products with little mark up has created unmatched customer loyalty for some successful membership based stores. Unlike those wholesale to public membership clubs, we do not charge any membership fee. Some merchants offer FREE shipping, but when you buy quantity 10, you pay 10 times total. Essentially, you are paying 10 times on shipping. We don't think that is fair to you. Why? Most of the time, shipping a 10 lb parcel does not cost 10 times of a 1 lb parcel.

The most effective way to control unauthorized key duplication is to make the key blanks as difficult to get as possible.  Key blanks are like blank paper to a copier.  Imagine copy paper protected by a patent owned by a paper mill.  The only place to get the paper would be the paper mill.  Thus, one of the ways security hardware manufacturers protect a keyway is to protect it by patent law.  Part of that protection is aggressively pursuing anyone who violates the patent with lawsuits and other legal instruments to prevent patent infringement.

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Don't be shy. If you discover any competitor outselling us in a particular product, whenever you purchase in large quantity, please bring it to our attention. Most of the time, we will match or beat their price, and give you a credit. If we lose to a competitor, it is our shame. We then know we need to work harder in sourcing to create values for you. * Price comparison must be based on comparable brands or models and in bulk quantity purchase.