• 2 months ago
Dans cette vidéo, vous apprendrez comment vous protéger des gadgets espions IA qui peuvent littéralement voir à travers vos murs. Des technologies comme Xaver peuvent détecter des personnes à l'intérieur des bâtiments depuis une distance allant jusqu'à un terrain de football, en utilisant des capteurs avancés pour suivre les mouvements en temps réel. La vidéo compare Xaver à d'autres technologies d'espionnage comme Range R, les radars à pénétration de sol et les caméras thermiques, qui soulèvent toutes de graves préoccupations en matière de vie privée. Pour préserver votre intimité, vous pourriez envisager de vous cacher derrière des feuilles de métal ou des murs, ou même d'utiliser du papier d'aluminium comme barrière. C'est un monde sauvage là-bas, mais avec les bonnes connaissances, vous pouvez garder une longueur d'avance sur les espions. Animation créée par Sympa.
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Transcript
00:00Installing curtains to preserve the intimacy of your home is no longer enough since the appearance of the Xaver Seal.
00:07This device, which could pass for a strange camera, is actually a new generation radar specifically designed to see through walls.
00:17Like a superhero, it has the power to visualize objects hidden behind obstacles and to present you with a 3D model with exceptional resolution on a touch screen.
00:30Now, you may be wondering how this technology can imagine what is happening inside your home.
00:37In fact, imagine may not be the most appropriate term, because it is much more precise than that.
00:44This technology uses radio waves that we know are able to cross walls.
00:49This is also why we can use our smartphones inside buildings or transfer data via Wi-Fi from one room to another.
00:56However, although radio waves can penetrate walls, they do not make them transparent.
01:02This is why the Xaver Seal can only generate an image of what is inside a building without showing the exact reality.
01:10After all, it is not a magic camera.
01:13When the Xaver Seal's radar waves hit something on the other side of a wall, like a person, a dog or a TV, they bounce.
01:22The device captures these echoes and uses them to create an image of what is behind the wall,
01:27by doing a 3D intelligent reconstruction using artificial intelligence methods.
01:34What makes this technology particularly interesting is the level of detail of the image.
01:39It is not just a vague shape.
01:41You can actually see where people are and how they move, whether they are sitting, standing or lying down.
01:47In addition, it can also indicate the height of any object.
01:52This makes it extremely valuable for rescue teams.
01:56In this way, firefighters can safely position themselves at a safe distance from dangerous areas and quickly scan large areas.
02:04They can determine if someone is trapped in a room on fire without having to enter blindly.
02:09The Xaver Seal was particularly effective during the earthquake in Turkey last year,
02:14helping to locate trapped survivors and guiding rescuers to their exact locations.
02:19Although this device is mainly used for humanitarian purposes,
02:23you might wonder if it is possible for someone to use it to spy on your house.
02:28And in theory, it is quite possible.
02:30However, there is a method to prevent this, making the Xaver Seal virtually ineffective.
02:37Radio wave devices can cross almost all types of walls, including cement, plaster, brick and even reinforced concrete.
02:44However, they cannot penetrate metal buildings or walls covered with plates or metal sheets.
02:51Indeed, metal reflects radio waves, just like a mirror reflects light.
02:56As a result, all the energy emitted by the Xaver Seal will be blocked.
03:01In fact, the particular reaction of metal to radio waves is exactly what allows the high-tech scanners found in airports to work.
03:09You know, those where you stand still, raise your arms, and a machine turns around you.
03:15It is this sophisticated scanner that uses a technology called advanced imaging, or TIA,
03:20which emits millimeter waves through the body of passengers.
03:25When you enter the scanner, it emits electromagnetic waves that bounce off your body and everything you wear.
03:32The operators of these machines cannot see inside the body or through the skin.
03:37Therefore, they cannot detect objects such as tampons.
03:40However, if a passenger has a dangerous object in his pocket, the machine should be able to detect it.
03:46This includes all dangerous metal objects.
03:48As mentioned earlier, metal reflects radio waves.
03:52It therefore behaves differently in relation to the interactions between waves and tissues such as skin.
03:57These reflections help the scanner to locate dangerous objects on a basic silhouette of the human body.
04:02In recent years, similar technologies have made notable advances.
04:08For example, in 2020, a device called ground penetration radar revealed all the mysteries of an ancient Roman city called Faleri Novi.
04:17This city, located about 50 km north of Rome, is partially buried underground.
04:24However, thanks to the ground penetration radar, we now have a deep knowledge of this site.
04:31Faleri Novi had about 3,000 inhabitants and had elaborate farms, a covered market, at least 60 large houses, as well as a temple and columns located near the south gate of the city.
04:44All these buried secrets were discovered and mapped in just 4 months.
04:49This speed of exploration is due to the fact that we did not use machines or shovels for excavation, but scanners.
04:57Indeed, the ground penetration radar is widely used in archaeology,
05:02because it allows to detect and map structures and artifacts buried without resorting to costly and endless excavations.
05:10This radar works in a similar way to devices such as the Xaver 1000 or body scanners used in airports, allowing to see through objects.
05:20It emits radar signals pulsed in the ground via a radar antenna,
05:23then detects the echoes sent back by objects.
05:28Discovering ancient Roman cities may seem far from our concerns,
05:32but similar technologies are actually much more present in our daily lives than we think.
05:38Take autonomous cars, for example.
05:41They are able to see their environment by detecting obstacles, pedestrians and other vehicles.
05:47This ability is made possible by a technology called LiDAR,
05:51which uses lasers to emit bright impulses at an incredibly high speed,
05:57in order to measure distances by a process known as flight time.
06:01Thus, these laser impulses are emitted by the device, and when it hits an object, they bounce back to the LiDAR sensor.
06:09The system calculates the time that each impulse takes to return, predicts the locations and distances,
06:14and then creates three-dimensional maps of the entire environment.
06:19These maps include details such as buildings, roads and other vehicles.
06:25This information is then combined with other data, such as speed limits,
06:30to ensure safe navigation during the journey.
06:35Then, on our list of technologies with a sixth sense, we find hyperspectral imaging.
06:41Imagine a camera that does not just capture the usual colors, red, green and blue,
06:47but that captures hundreds of different colors across the entire light spectrum.
06:52This includes invisible wavelengths to the human eye, such as infrared radiation,
06:57ultraviolet rays and even X-rays and gamma.
07:01A hyperspectral camera goes beyond what we can perceive
07:05by breaking down light into many bands or stripes of color.
07:10It separates light into individual wavelengths or spectral bands,
07:15offering a two-dimensional image of a scene that reveals important and hidden information.
07:21This technology can be used in various ways.
07:24For example, you may have already wondered how your fruits and vegetables stay fresh in stores.
07:31Hyperspectral cameras allow you to scan and quickly analyze large volumes of food in real time.
07:38They measure maturity, inspect moulds and even detect contamination.
07:44The goal is to reduce food waste,
07:47while ensuring that only the most attractive and tasty products arrive in your store.
07:53Thermal cameras work in a similar way and help keep our homes warmer,
07:58especially during the winter months.
08:01Imagine these devices as real detectives,
08:04capable of detecting invisible signs of energy,
08:08and showing where your home loses heat or lets air flow through.
08:12Thermal cameras detect infrared energy emitted by all objects depending on their temperature.
08:17This energy is invisible to the human eye,
08:20but these cameras can detect it and translate it for us using a detector.
08:24The camera software then processes the captured radiation data and converts it into an image.
08:30You know, these strange graphics that show how hot or cold things are.
08:35The different colors indicate the different temperatures,
08:38red generally representing hot areas and blue cold areas.
08:43In short, all you have to do is point these cameras at the windows,
08:46doors and walls of your house to see where the cold air infiltrates.
08:49However, it is advisable to call a technician to help you with this task.

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