Digital forensics

Geo-tagging is a key part of images that can be used in many cameras and programs in London these days.

Geo-tagging is where an image will retain a series of geographical details. This is used as additional details to make it easier for people to figure out what is in a listing as the information is being posted in some way or another.

Geo-tagging is a key to validating information and to see where items came from. Digital forensics London often entails the use of geo-tag forensics to find clues relating to criminal investigations among other critical functions.

This function is particularly convenient in cases when GPS technology is utilized. Many portable devices that take photos have GPS receivers that can take in data with geo-tagging in mind. Therefore, it should be relatively easy to figure out where an image has come from by taking a look at the latitude, longitude and altitude readings that came from any particular forensics readout. Still, not all devices are going to be all that direct with regards to finding or listing information on where something might have been located at a given time.

Most of the geo-tagging functions that can be utilized involve manual controls to figure out what is happening at a given time. This may entail the use of a hex editor. A program like WinHex may be used for digital forensics solutions to work out right.

In most cases a program like this will include directional letters that identify information on what is being open at a given time. These are often used to figure out where a picture was taken based on the direction that it faces.

The number patterns that are utilized at a given time may also be factored into the process. The 00 00 00 01 pattern must be identified with 00 00 00 64 being at its end. The four bytes on the first set that this was found in will then have to be factored into the equation.

A program like WinHex will then be used to analyze this data and to create calculations used to figure out the individual degree and second values come with a particular measurement. The same patterns must be found at least four times in order to get a more accurate idea of how each individual location measurement is being used at any given moment in time.

The important thing to see here is that the calculations can vary based on the type of device that is being analyzed in the digital forensics process. This can include calculations for devices from HTC, LG, Apple and many other products that might use GPS systems.

A solution for digital forensics London should entail geo-tag forensics to analyze the codes that come with different images and other features found in various devices. While GPS systems may be useful, they aren’t always direct so it will help to use an appropriate program used for geo-tagging forensics to ensure that the right data is found and that the data in particular is as accurate as it possibly can be.

John Douglas, Computer Forensics Specialist.

 

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