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Evidence Tracking

a technology of evidence and tracking, applied in the field of evidence tracking, can solve the problems of system performing “area reads” that would not be possible, and achieve the effect of facilitating rf tracking of salient events

Inactive Publication Date: 2009-02-12
VISIBLE ASSET INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables continuous tracking of personnel and evidence entry and exit from any point along the crime scene boundary, improving the accuracy of maintaining a chain of custody and crime scene log without the need for close-proximity readers.

Problems solved by technology

The system performs “area reads” that would not be possible if higher RF frequencies were employed.

Method used

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Examples

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Embodiment Construction

[0007]Turning to FIG. 1, what is shown is a typical deployment of the system according to the invention. A truck or other motor vehicle 16 arrives at a crime scene defined by corpse 15. A spool 13 is removed from the truck and is placed at a position that lies on a desired crime scene boundary. An electrically conductive line 12 is unspooled from the spool 13 and is laid out along the surface of the ground along the desired crime scene boundary, returning to the start to define a complete boundary. The line is connected to a transceiver 14 about which more will be said later. The transceiver 14 is optionally equipped with a GPRS, Edge, EVDO, WiFi, or other WAN interface permitting reporting of events to distant equipment omitted for clarity in FIG. 1.

[0008]Personnel 18 wears a badge 19, containing a radio tag. The radio tags employed can, for example, be tags such as those described in U.S. Pat. No. 7,049,963 entitled “Networked RF tag for tracking freight” and assigned to the same ...

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PUM

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Abstract

A system uses a large loop antenna, connected with a transceiver operating below 1 MHz. The loop antenna is deployed from a spool to surround a crime scene, and may carry indicia communicating that it is a crime scene boundary. The system interrogates devices, including evidence bags and badged personnel, as they enter and leave the scene. The system can optionally log the time of salient events. A second loop antenna can log evidence bags as they enter a vehicle. The devices can be silenced by the transceiver and thus collisions can be reduced and avoided among responses from devices. The system performs “area reads” that would not be possible if higher RF frequencies were employed.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from U.S. application No. 60 / 700,886 filed Jul. 19, 2005, and from U.S. application No. 60 / 806,748 filed Jul. 7, 2006, each of which is incorporated herein by reference for all purposes.BACKGROUND[0002]It is not easy to keep track of evidence in a crime scene investigation. It is necessary for each piece of evidence to maintain a “chain of custody” so that the authenticity of a piece of evidence at trial can be known. At many crime scenes it is also necessary to maintain a log of the personnel entering and leaving the crime scene. The procedures required to maintain the chain of custody and the crime scene log are detail-oriented and if errors are made it can be a big problem later.[0003]It has been proposed to use RFID tags, for example, to try to keep track of evidence and to assist in logging entry and exit of personnel from areas. Most RFID tag designs are not very workable for these purposes, as they ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G09F7/00
CPCG06K2017/0051G06K17/00
Inventor WATERHOUSE, PAULSTEVENS, JOHN K.AUGUST, JASONOLSON, JESSICA L.
Owner VISIBLE ASSET INC