{"id":14714,"date":"2024-10-31T15:39:14","date_gmt":"2024-10-31T14:39:14","guid":{"rendered":"https:\/\/lock4safe.com\/?post_type=portfolio&#038;p=14714"},"modified":"2024-12-11T18:14:07","modified_gmt":"2024-12-11T17:14:07","slug":"mechanical-locks-theoretical-codes","status":"publish","type":"portfolio","link":"https:\/\/lock4safe.com\/en\/portfolio-item\/mechanical-locks-theoretical-codes\/","title":{"rendered":"Mechanical locks &#8211; Theoretical codes?"},"content":{"rendered":"<section  class='av_textblock_section av-m2xeohfo-e3c6ca3821f047449f66cffda6441e39 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h1>Theoretical codes. What are they?<\/h1>\n<\/div><\/section>\n<section  class='av_textblock_section av-m2xep5qw-39d2058b272884c40c16a79e6a8fcaf2 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3>You often read the term \u201ctheoretical codes\u201d, \u201ctheoretical code differences\u201d or \u201ctheoretical permutations\u201d in advertisements or descriptions of mechanical locks.<\/h3>\n<\/div><\/section>\n<div  class='flex_column av-av_one_full-7714eba142aeda1f8b5272a3c372b279 av_one_full  avia-builder-el-2  el_after_av_textblock  el_before_av_one_half  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-m2xepqnd-d40706f9f90328c8a493cf4c6fcd8982 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Over 200,000 theoretical codes, what does that mean? Well, since it\u2019s advertising, you initially suspect that the number of real code differences is less than 200,000. And that\u2019s true. The theoretical value is simply calculated:<\/p>\n<\/div><\/section><\/div>\n<div  class='flex_column av-av_one_half-a2cef933b0a555f25d1e39b22a8e9dae av_one_half  avia-builder-el-4  el_after_av_one_full  el_before_av_one_half  first flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-795419d58c154e6c4520503d74afa3e2\">\n.avia-image-container.av-av_image-795419d58c154e6c4520503d74afa3e2 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-795419d58c154e6c4520503d74afa3e2 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-795419d58c154e6c4520503d74afa3e2 av-styling- avia-align-center  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-14733 avia-img-lazy-loading-not-14733 avia_image ' src=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-300x300.jpg\" alt='' title='knopf'  height=\"300\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-300x300.jpg 300w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-80x80.jpg 80w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-768x768.jpg 768w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-36x36.jpg 36w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-180x180.jpg 180w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf-705x705.jpg 705w, https:\/\/lock4safe.com\/wp-content\/uploads\/2024\/10\/knopf.jpg 833w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-m2xeq9fv-4c9bc37f2979e16876932e2c074bbdca '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>For combination locks &#8211; numbers on dial to the power of number of wheels<\/p>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-av_one_half-538dd737667e19053994a94b9156413b av_one_half  avia-builder-el-7  el_after_av_one_half  el_before_av_one_full  flex_column_div  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-ac7bbad3cb4b5cc934934a31bd13be3e\">\n.avia-image-container.av-av_image-ac7bbad3cb4b5cc934934a31bd13be3e img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-ac7bbad3cb4b5cc934934a31bd13be3e .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-ac7bbad3cb4b5cc934934a31bd13be3e av-styling- avia-align-center  avia-builder-el-8  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-14726 avia-img-lazy-loading-not-14726 avia_image ' src=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-300x300.jpg\" alt='' title='matrix_key'  height=\"300\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-300x300.jpg 300w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-80x80.jpg 80w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-768x768.jpg 768w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-36x36.jpg 36w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-180x180.jpg 180w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key-705x705.jpg 705w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/matrix_key.jpg 833w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-m2xeqi9v-fe7a2e29e283fe4094635656d5e90373 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>For key locks &#8211; number of possible cutting depths to the power of number of cuts<\/p>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-av_one_full-7714eba142aeda1f8b5272a3c372b279 av_one_full  avia-builder-el-10  el_after_av_one_half  el_before_av_one_full  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-m2xesoh9-547f59bb728bfbeb8255f9591f8df7b0 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>However, these numbers do not really provide any information about the security of a mechanical lock, because the properties of the mechanics are completely ignored. <br class=\"avia-permanent-lb\" \/><br class=\"avia-permanent-lb\" \/>If you turn a 3-wheel combination lock half or a whole number too far when setting the last wheel, you will find that the lock will still open. This is OK (to a certain extent) as long as the lock still meets the requirement of 100,000 differences per the EN1300 standard. It is just nonsense to mention the theoretical value of 1 million in the context of the lock\u2019s security.<\/p>\n<h4>Manufacturing tolerances<\/h4>\n<p>All mechanical locks consist of mechanical parts that interlock. And each part has corresponding manufacturing tolerances. The more precisely the parts are manufactured, the more real code differences can be achieved. In other words: the wobblier the key or the dial feels when turning, the fewer real codes the lock has.<\/p>\n<h4>Intentional play<\/h4>\n<p>That said, it is to consider that a certain amount of play in the parts is necessary to ensure that the lock still works even if some dust has penetrated or corrosion has set in after years of use. As you can imagine, this also comes at the expense of the actual codes available.<\/p>\n<h4>User-friendliness<\/h4>\n<p>Let&#8217;s take a double-bit key with 7 notches, each of which can have 6 different depths, as an example. The theoretical number of codes is therefore 6 to the power of 7 = 279,936. In reality, however, many of the theoretically possible keys are never manufactured. This is roughly how you imagine the key:<\/p>\n<\/div><\/section><\/div><\/p>\n<div  class='flex_column av-av_one_full-a2cef933b0a555f25d1e39b22a8e9dae av_one_full  avia-builder-el-12  el_after_av_one_full  el_before_av_one_full  first flex_column_div  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-c5ee2a0416644fb5cc960fa33d193ece\">\n.avia-image-container.av-av_image-c5ee2a0416644fb5cc960fa33d193ece img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-c5ee2a0416644fb5cc960fa33d193ece .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-c5ee2a0416644fb5cc960fa33d193ece av-styling- avia-align-center  avia-builder-el-13  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-14722 avia-img-lazy-loading-not-14722 avia_image ' src=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key01-300x150.jpg\" alt='' title='key01'  height=\"150\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key01-300x150.jpg 300w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key01-768x384.jpg 768w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key01-705x353.jpg 705w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key01.jpg 833w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div><\/div><\/div><\/div>\n<div  class='flex_column av-av_one_full-7714eba142aeda1f8b5272a3c372b279 av_one_full  avia-builder-el-14  el_after_av_one_full  el_before_av_one_full  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-m2xeswzs-68dd588c98272229714616c272e96e3c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">However, nobody wants to have any of the following keys:<\/p>\n<\/div><\/section><\/div>\n<div  class='flex_column av-av_one_full-a2cef933b0a555f25d1e39b22a8e9dae av_one_full  avia-builder-el-16  el_after_av_one_full  el_before_av_one_full  first flex_column_div  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-af6e7b888e54bf033d65cee5f26b0d9f\">\n.avia-image-container.av-av_image-af6e7b888e54bf033d65cee5f26b0d9f img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-af6e7b888e54bf033d65cee5f26b0d9f .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-af6e7b888e54bf033d65cee5f26b0d9f av-styling- avia-align-center  avia-builder-el-17  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-14724 avia-img-lazy-loading-not-14724 avia_image ' src=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-1030x172.jpg\" alt='' title='key02'  height=\"172\" width=\"1030\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-1030x172.jpg 1030w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-300x50.jpg 300w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-768x128.jpg 768w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-1536x256.jpg 1536w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-2048x342.jpg 2048w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-1500x250.jpg 1500w, https:\/\/lock4safe.com\/wp-content\/uploads\/2022\/06\/key02-705x118.jpg 705w\" sizes=\"(max-width: 1030px) 100vw, 1030px\" \/><\/div><\/div><\/div><\/div>\n<div  class='flex_column av-av_one_full-7714eba142aeda1f8b5272a3c372b279 av_one_full  avia-builder-el-18  el_after_av_one_full  avia-builder-el-last  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-m2xeuuhr-acf7035893c173a3063596b98b36177d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>The corresponding locks would be easy to pick and the individual prongs on such keys would bend or break very easy. Rendering them unsecure and\/or extremely user unfriendly. In fact, in our example, almost half of the theoretically possible keys are unsuitable in reality for various reasons.<\/p>\n<h4>Another example<\/h4>\n<p>You set the code on a combination lock and look at the dial at a slight angle. In the theoretical world, the lock should not open because of the parallax. In reality, however, it does because the width of the fence on the lever is much smaller than the width of the gate in the wheel. The technical term for this is &#8220;dialing span&#8221; and indicates how much inaccuracy the lock allows when setting the code. But: the greater the user-friendliness, the less remains of the theoretical code differences.<\/p>\n<h4>Conclusion<\/h4>\n<p>With mechanical locks, specifying theoretical codes is stupid and misleading. Only with electronic locks do theory and reality agree.<\/p>\n<\/div><\/section><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":14719,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"tags":[],"portfolio_entries":[130,95,96,97],"class_list":["post-14714","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-functions","portfolio_entries-info","portfolio_entries-security","portfolio_entries-technical"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mechanical locks - Theoretical codes? - Lock4Safe | Tresorschl\u00f6sser und Sicherheitstechnik f\u00fcr Tresore<\/title>\n<meta name=\"description\" content=\"Theoretical codes and mechanical locks: no real security. 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