Recommendations for modifications to current approaches used in crime labs for serial number recovery, as well as suggestions for future work, conclude this document. Investigations into the serial number recovery in a series of ferromagnetic firearms (both steel and certain stainless steels) will then be presented. This is followed by a description of how such investigations were simulated on lab samples, including a look at how the microstructure of a given steel will affect its performance in the test. The scope of this report includes a brief overview of the magnetic particle inspection method in general and its applications to forensic serial number recovery. Additionally, some aspects of surface preparation of firearm samples prior to number recovery were included in this work. Also investigated are the effects of the nature of the sample magnetization (AC, rectified DC, and true DC) and the use of various detection media, such as visible powders and fluorescent sprays, on test outcome. This includes attempts to understand the magnetic characteristics of different steels that affect their performance in the test, such as varying results for carbon steels and alloy steels after different thermal and forming treatments. The aim of this project is to investigate specific aspects of magnetic particle inspection for serial number recovery. This is not surprising when one considers that little formal development has apparently evolved for use in such investigations since the publication of seminal work in this area some time ago. Crime labs have reported low success rates using these tools. Equipment specialized for this detection is not used in these attempts a portable magnetic yoke used typically for flaw detection on large weldments or structures, along with dry visible magnetic powders, have been the tools of criminologists working in this area. The use of this method is predicated on the detection of metal deformation present under stamped serial numbers after the visible stamp has been removed. This can be used to reference the original serial number.One method used by crime labs to recover obliterated serial numbers in steel firearms (ferrous samples) is the magnetic particle technique. If you kept the original product box, you can also find a barcode sticker on the outside displaying a 14-digit number. Serial numbers for legacy products are found on the serial number card originally enclosed within the product box or the installation disk cover. For more details, please see this article. After the order has been finalized, launch Native Access and check the Available / Not installed section for your download. When purchasing a download product from the NI webshop, your NI product serial number is automatically placed in your NI User Account. The product box for a KOMPLETE bundle (hard disk or flash drive) contains a registration card like the one pictured below. Boxed KOMPLETE Bundles and NI Software Products AUDIO KONTROL 1, KORE, RIG KONTROL, etc.) do not require registration. This applies to all current KOMPLETE, MASCHINE, and TRAKTOR hardware devices. You can also find the Hardware Serial Number and Device ID printed on the under-side of your device. After registering your MASCHINE or KOMPLETE KONTROL hardware with Native Access, all software included with your product becomes available for download. The product boxes for MASCHINE and KOMPLETE KONTROL hardware / software bundles will contain a registration card like the one pictured below. After registering your TRAKTOR hardware with Native Access, all software included with your product becomes available for download. The product box for a TRAKTOR hardware / software bundle contains a registration card like the one pictured below. Finding Serial Numbers of New Products TRAKTOR Hardware and Software Bundles There, you will find a full list of all NI Products that you currently have registered. To find the serial numbers that are already registered into your NI Account, log into this page. This applies to your existing registrations, as well as serial numbers included with new products. In this article, we explain how to locate your NI product serial number.
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