Oct 11, 2022 17:00:00

'The Hummingbird Clock' uses slight fluctuations in power frequency as a timestamp

The frequency of the power supply is not completely fixed, but changes slightly. The British government records these fluctuations on a second-by-second basis and uses them as 'fingerprints' for video and audio recordings for surveillance and forensic purposes. ' The Hummingbird Clock ' uses the same technology as this mechanism to record frequency fluctuations on a clock.

The Hummingbird Clock

http://hummingbirdclock.info/

When you access it, the clock will be displayed in British time and you will hear a slightly fluctuating sound at around 50Hz.

If you can't hear the sound, click or tap anywhere on the clock and go to

the ABOUT page , and the sound should start coming out. Click or tap the clock displayed on the left again to display the clock in full view.

If the clock is displayed for a long time, the tip of the second hand will draw a red trajectory. There is a slight blurring as the sound fluctuates.

The operating scenery is like this.

'The Hummingbird Clock' operation scenery - YouTube


The origin of this ``The Hummingbird Clock'' is a technology called ``Electrical Frequency Network (ENF) Analysis'' that the British government has been operating since July 7, 2016.

In 1996, Dr. Katarina Grigoras noticed that the noise produced by electricity was not just a sound, but a subtle ``singing''. The reason for this is that although the UK power supply frequency is 50Hz, it can momentarily fluctuate between 49Hz and 51Hz. When used by households and businesses, standardization is carried out at the power distribution stage, and home appliances can operate without problems whether the frequency is 49.6Hz or 51.3Hz.

However, when these subtle fluctuations are recorded 24 hours a day, 365 days a year, they become a 'fingerprint' of that day and time. In the UK, wherever electricity is available, sounds recorded at around 50Hz will be heard from devices that use electricity, so check the fluctuations with the master data. This makes it possible to determine when the sound occurred.

Government agencies have been recording master data since July 7, 2016, but the data is not available to the public. Instead, 'The Hummingbird Clock' has released technology so that anyone can access it.

According to the site's description, if you are involved in a legal dispute and need to know the exact date and time of audio or video recording data, please contact us through the submission page, and the investigation committee will review your application and decide on the relevant case. After considering whether or not to handle it, they will present the analysis results and technical report.