https://www.lockwiki.com/index.php?title=Illinois_Duo&feed=atom&action=history
Illinois Duo - Revision history
2024-03-29T14:16:21Z
Revision history for this page on the wiki
MediaWiki 1.38.5
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=12250&oldid=prev
Mgsecure: specs
2022-12-28T16:13:36Z
<p>specs</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:13, 28 December 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Line 9:</td>
<td colspan="2" class="diff-lineno">Line 9:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|maker = [[Illinois Lock Company]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|maker = [[Illinois Lock Company]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|patent =</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|patent =</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| spec_on = true</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| spec_comptype = [[Wafer]]</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| spec_comp = 18</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<!-- diff cache key lockwiki-lw_:diff::1.12:old-11954:rev-12250 -->
</table>
Mgsecure
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=11954&oldid=prev
Mgsecure: /* Principles of Operation */ link to key differs page
2022-12-19T14:54:53Z
<p><span dir="auto"><span class="autocomment">Principles of Operation: </span> link to key differs page</span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:54, 19 December 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l18">Line 18:</td>
<td colspan="2" class="diff-lineno">Line 18:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Principles of Operation ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Principles of Operation ==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>*2<sup>5</sup>*2<sup>4</sup>) theoretical key differs. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref> </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>*2<sup>5</sup>*2<sup>4</sup>) theoretical <ins style="font-weight: bold; text-decoration: none;">[[Differs|</ins>key differs<ins style="font-weight: bold; text-decoration: none;">]]</ins>. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref> </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.</div></td></tr>
</table>
Mgsecure
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=11948&oldid=prev
Mgsecure: Page Title/TOC fix
2022-12-19T14:08:55Z
<p>Page Title/TOC fix</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:08, 19 December 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>=<del style="font-weight: bold; text-decoration: none;">Duo=</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><span style</ins>=<ins style="font-weight: bold; text-decoration: none;">"font-size: 188%;">{{PAGENAME}}</span></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">----</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Lock model</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Lock model</div></td></tr>
<!-- diff cache key lockwiki-lw_:diff::1.12:old-11946:rev-11948 -->
</table>
Mgsecure
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=11946&oldid=prev
Mgsecure: moved Duo to Illinois Duo: match site naming conventions
2022-12-19T14:08:01Z
<p>moved <a href="/index.php/Duo" class="mw-redirect" title="Duo">Duo</a> to <a href="/index.php/Illinois_Duo" title="Illinois Duo">Illinois Duo</a>: match site naming conventions</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<tr class="diff-title" lang="en">
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:08, 19 December 2022</td>
</tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div>
</td></tr></table>
Mgsecure
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=9368&oldid=prev
Sandplum: /* See also */
2021-03-10T21:30:07Z
<p><span dir="auto"><span class="autocomment">See also</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:30, 10 March 2021</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l62">Line 62:</td>
<td colspan="2" class="diff-lineno">Line 62:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[UL 437]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[UL 437]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Lock models]]</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Wafer locks]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Wafer locks]]</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Category:Illinois Lock Company|Duo]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
</table>
Sandplum
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=3776&oldid=prev
Datagram at 21:50, 22 January 2010
2010-01-22T21:50:41Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:50, 22 January 2010</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l20">Line 20:</td>
<td colspan="2" class="diff-lineno">Line 20:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The key is made of nickel-silver and is non-reversible. The bow is stamped with an indirect key code.</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><div align="center"><gallery></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><div align="center"><gallery></div></td></tr>
<!-- diff cache key lockwiki-lw_:diff::1.12:old-3766:rev-3776 -->
</table>
Datagram
https://www.lockwiki.com/index.php?title=Illinois_Duo&diff=3766&oldid=prev
Datagram: Created page with '=Duo= {{Lock model |name = Duo |Img = File:Duo_cylinder.jpg |lock_type = Cylinder |lock_design = Wafer |maker = Illinois Lock Company |patent = }} The '''Duo''' is …'
2010-01-22T19:53:49Z
<p>Created page with '=Duo= {{Lock model |name = Duo |Img = File:Duo_cylinder.jpg |lock_type = <a href="/index.php/Cylinder" title="Cylinder">Cylinder</a> |lock_design = <a href="/index.php/Wafer" title="Wafer">Wafer</a> |maker = <a href="/index.php/Illinois_Lock_Company" title="Illinois Lock Company">Illinois Lock Company</a> |patent = }} The '''Duo''' is …'</p>
<p><b>New page</b></p><div>=Duo=<br />
<br />
{{Lock model<br />
|name = Duo<br />
|Img = File:Duo_cylinder.jpg<br />
|lock_type = [[Cylinder]]<br />
|lock_design = [[Wafer]]<br />
|maker = [[Illinois Lock Company]]<br />
|patent =<br />
}}<br />
<br />
The '''Duo''' is a [[UL 437]]-rated [[wafer]] lock made by [[Illinois Lock Company]]. The Duo uses a total of 18 wafers that interface with three active bitting surfaces on the bottom, top, and side of the key. The Duo is popular in the United States in laundromats, vending machines and money containers.<br />
<br />
<br />
__TOC__<br />
<br />
== Principles of Operation ==<br />
<br />
The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>*2<sup>5</sup>*2<sup>4</sup>) theoretical key differs. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref> <br />
<br />
Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.<br />
<br />
<div align="center"><gallery><br />
File:Duo key.jpg| The Duo key.<br />
File:Duo key bitting.jpg| Closeup of the bitting used by top and side wafers.<br />
File:Duo misaligned.jpg| Wafers improperly aligned in the [[plug]].<br />
File:Duo aligned.jpg| Wafers properly aligned in the plug.<br />
</gallery></div><br />
<br />
== Disassembly instructions ==<br />
<br />
The Duo is relatively easy to disassemble, but extremely difficult to re-assemble because of the interaction between wafers and springs.<br />
<br />
# Remove the [[cam]] or C-clip.<br />
# Remove the [[plug]].<br />
# With no key inserted the wafers can be pushed out from the top or the bottom of the plug.<br />
<br />
== Vulnerabilities ==<br />
<br />
The Duo may be vulnerable to one of more of the following:<br />
<br />
* [[Lockpicking]]<br />
* [[Decoding]]<br />
* [[Impressioning]]<br />
<br />
== Gallery ==<br />
<br />
<div align="center"><gallery><br />
File:Duo wafers 1.jpg| Wafers used in the Duo (bottom & top).<br />
File:Duo wafers 2.jpg| Wafers used in the Duo (side & profile).<br />
</gallery></div><br />
<br />
== References ==<br />
<references /><br />
<br />
== See also ==<br />
<br />
* [[Wafer]]<br />
* [[Illinois Lock Company]]<br />
* [[UL 437]]<br />
<br />
[[Category:Wafer locks]]<br />
[[Category:Illinois Lock Company|Duo]]</div>
Datagram