Here is a new technique that is used to authenticate recording for legal purposes, including court cases, where it has been proven successful several times in court cases.
It is a little known fact that the fluctuations in the power grid are recorded on to CCTV and audio recordings. It’s called noise and is unwanted. However, this seeminingly random noise is useful in being able to validate a recording.
It’s all because the noise was recognised as practically random and thus impossible to predict. Met scientists have been recording this noise now for years. Thus when a recording is analysed they can identify this noise, compare it with the recording and come up with an exact date and time for that moment in the recording. Fast forward 20 minutes and do the same comparison. If the time stamp is now 5 minutes or 30 minutes or whatever then it has been tampered with. Read the secretive story here.
Although I would have thought this data would be very specific to certain areas, such as London or at least it’s local grid and of no use whatsover for other areas such a Birmingham or Bristol although they are all interconnected. Although I would think it would be easy to set up a similar database for those areas. Could even artificially generate noise where necessary to identify general areas. A very rough tool but a tool none the less.
As with all these tools the problem I see is that it is Plod with control of them. So it wouldn’t be too hard for them to edit recordings and then imprint them with the right noise for what they want. Like the child porn system where it disappears into a black hole and then out comes someone saying ‘Yep, found some.’ when required. Or am I just too distrustful?
Authenticating recordings
Here is a new technique that is used to authenticate recording for legal purposes, including court cases, where it has been proven successful several times in court cases.
It is a little known fact that the fluctuations in the power grid are recorded on to CCTV and audio recordings. It’s called noise and is unwanted. However, this seeminingly random noise is useful in being able to validate a recording.
It’s all because the noise was recognised as practically random and thus impossible to predict. Met scientists have been recording this noise now for years. Thus when a recording is analysed they can identify this noise, compare it with the recording and come up with an exact date and time for that moment in the recording. Fast forward 20 minutes and do the same comparison. If the time stamp is now 5 minutes or 30 minutes or whatever then it has been tampered with. Read the secretive story here.
Although I would have thought this data would be very specific to certain areas, such as London or at least it’s local grid and of no use whatsover for other areas such a Birmingham or Bristol although they are all interconnected. Although I would think it would be easy to set up a similar database for those areas. Could even artificially generate noise where necessary to identify general areas. A very rough tool but a tool none the less.
As with all these tools the problem I see is that it is Plod with control of them. So it wouldn’t be too hard for them to edit recordings and then imprint them with the right noise for what they want. Like the child porn system where it disappears into a black hole and then out comes someone saying ‘Yep, found some.’ when required. Or am I just too distrustful?