MIFARE Classic® Compatible 1K One Time Write UID Modifiable Tiny FPC Tags - Pack of 5

<h2>MIFARE Classic® Compatible 1K, UID Changeable One Time (Gen2a) - FPC Stickers - Pack of 5</h2> <p>The absolute smallest MIFARE Classic® Compatible 1K chips on the market. At just 8mm (1/32") across, these tags can be placed anywhere. Despite their tiny size, they have perfectly tuned antennas for optimised performance. There are <b>five tags per pack.</b></p> <p>More and more access control systems (notably VIGIK® compatible systems in Europe) use detection routines to determine if a badge is Gen1a or Gen2 - and will refuse access to prevent cloned badges being used.<br></p> <p>The solution is Gen2a MIFARE Classic® Compatible 1K UID One-Time-Write tags. The UID of the tag can be written one time only. Once written, it cannot be changed - the tag is indistinguishable from an original tag.</p> <div class="chipset--tables-wrapper"> <div class="chipset--table-title">Technical Specifications</div> <div class="chipset--table-container"> <table class="chipset--table"> <thead> <tr> <th>Feature</th> <th>Information</th> <th>Notes</th> </tr> </thead> <tbody> <tr> <td data-label="Feature">Chipset</td> <td data-label="Information">MIFARE Classic® Compatible</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Feature">Memory Size</td> <td data-label="Information">1K</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Feature">UID Size</td> <td data-label="Information">4 Byte</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Feature">UID Modifiable</td> <td data-label="Information">✔️</td> <td data-label="Notes">UID can be modified <i>one time only</i> </td> </tr> <tr> <td data-label="Feature">Chip Generation</td> <td data-label="Information">Gen 2a (OTW)</td> <td data-label="Notes"><a title="Magic tag / card generation guide" href="/blogs/academy/know-your-magic-cards">Chipset Generation Guide</a></td> </tr> <tr> <td data-label="Feature">Packaging</td> <td data-label="Information">5 per pack</td> <td data-label="Notes">Delivered in an anti-static bag</td> </tr> </tbody> </table> </div> <div class="chipset--table-title">Write Capabilities</div> <div class="chipset--table-container"> <table class="chipset--table"> <thead> <tr> <th>UID Modifiable</th> <th>Unlock Required</th> <th>DirectWrite / Block 0</th> <th>One Time Write</th> <th>Notes</th> </tr> </thead> <tbody> <tr> <td data-label="UID Modifiable">✔️</td> <td data-label="Unlock Required"><br></td> <td data-label="DirectWrite / Block 0">✔️</td> <td data-label="One Time Write">✔️</td> <td data-label="Notes"><br></td> </tr> </tbody> </table> </div> <div class="chipset--table-title">Device Compatibility</div> <div class="chipset--table-container"> <table class="chipset--table"> <thead> <tr> <th>Compatibility</th> <th>UID</th> <th>R/W</th> <th>Config</th> <th>Notes</th> </tr> </thead> <tbody> <tr> <td data-label="Compatibility">Flipper Zero</td> <td data-label="UID">✔️</td> <td data-label="R/W">✔️</td> <td data-label="Config">✔️</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Compatibility">Proxmark / iCopy-X</td> <td data-label="UID">✔️</td> <td data-label="R/W">✔️</td> <td data-label="Config">✔️</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Compatibility">Android &amp; iOS</td> <td data-label="UID">✔️</td> <td data-label="R/W">✔️</td> <td data-label="Config">✔️</td> <td data-label="Notes">Via MTools app</td> </tr> <tr> <td data-label="Compatibility">LibNFC</td> <td data-label="UID">✔️</td> <td data-label="R/W">✔️</td> <td data-label="Config">✔️</td> <td data-label="Notes"><br></td> </tr> <tr> <td data-label="Compatibility">ChameleonUltra</td> <td data-label="UID">✔️</td> <td data-label="R/W">✔️</td> <td data-label="Config">✔️</td> <td data-label="Notes">Via MTools app</td> </tr> </tbody> </table> </div> </div> <h2>Hands on: See the card in action</h2> <p>The MIFARE Classic® Compatible 1K UID One-Time-Write can be used with several tools:</p> <h3>LibNFC - change UID</h3> <p>To update the UID of the badge, simply write the dump contents to the badge.</p> <pre><code>nfc-mfclassic w a u /tmp/1K.dmp</code></pre> <h3>Proxmark - change UID</h3> <p>To update the UID of the badge, simply write the dump contents to the badge. When using <code>wrbl</code> - you are directly modifying the card's configuration. <b>Ensure that all data is correct</b> including BCC - otherwise you <b>will</b> brick your card.</p> <pre><code>hf mf wrbl --blk 0 -k FFFFFFFFFFFF -d 11223344440804006263646566676869 # Where 11223344 is the UID, 08 is the BCC</code></pre> <h3>Live Demonstration : LibNFC &amp; Proxmark</h3> <p><script async="" theme="solarized-dark" id="asciicast-8o5myb3bxd4y172q0y3yyny72" src="https://asciinema.org/a/8o5myb3bxd4y172q0y3yyny72.js"></script></p> <h2>Unbricking</h2> <p>"Soft-bricking" refers to when a magic card has been configured in a way that prevents it from being detected. Ways of soft-bricking tags include:</p> <ul> <li>Incorrect BCC</li> <li>Incorrect SAK</li> <li>Incorrect ATQA</li> <li>Incorrect ATS</li> <li>Incorrect ACL (Access Control) Values</li> </ul> <p>Some "soft-brick" situations can be resolved with special commands. If your MIFARE Classic® Compatible 1K UID Modifiable is "soft-bricked", you can try recovering it with the following methods:</p> <h3>With Proxmark / iCopy-X</h3> <pre><code>hf 14a config --atqa force --bcc ignore --cl2 skip --rats skip # for 1k hf mf wrbl --blk 0 -k FFFFFFFFFFFF -d 11223344440804006263646566676869 --force hf 14a config --std hf 14a reader</code></pre> <h3>Via external reader/writer and MTOOLS</h3> <p>Select the "UID Changer" function in MTools, select "bricked" and run the task</p> <h3>IMPORTANT:</h3> <p>Lab401 cannot provide refunds under any circumstances for cards that were 'bricked' due to incorrect configurations.</p>