Roberta Aguirre
Airport body scanners have been the subject of much controversy, with many travellers concerned about privacy and safety. Between 2009 and 2013, the TSA used machines that produced detailed images of passengers' bodies, sparking a media outcry and leading to the adoption of new technology. Today, most US airports use millimetre wave units, which are safer and do not produce nude images. However, some countries are deploying higher-radiation X-ray machines that can see through flesh, raising concerns about privacy and health risks.
| Characteristics | Values |
|---|---|
| Scanning technology | Millimeter wave imaging technology, X-ray |
| What they can detect | Metallic and non-metallic items, including weapons and explosives |
| Privacy protections | No longer show naked images of passengers |
| Health risks | Exposure to non-ionizing radiation, potential serious health risks from X-ray backscatter machines |
| Use by TSA | No longer uses X-ray backscatter machines, uses millimeter wave units instead |
| Use in other countries | Deployed in Ghana and Nigeria, used in 8 Australian airports, Indian government equipping 84 airports with full-body scanners |
| Opt-out policies | Australia has a no opt-out policy, alternative screening methods offered for medical/physical conditions |
| Impact on specific groups | Trans individuals may be flagged for "enhanced screening", virtual strip searches of minors may violate child pornography laws |
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What You'll Learn
- Airport scanners use Advanced Imaging Technology (AIT) to detect metallic and non-metallic items
- Scanners use non-ionizing radiation, which is deemed safe by the TSA and CDC
- Scanners do not show naked bodies, but outline areas of concern
- Scanners can detect items such as medical devices, prosthetics, and tampons
- Scanners have been criticised for their potential to violate human rights and invade privacy
Airport scanners use Advanced Imaging Technology (AIT) to detect metallic and non-metallic items
Airport body scanners use Advanced Imaging Technology (AIT) to detect metallic and non-metallic items. AIT is a millimetre wave scanner that detects a wide range of metallic and non-metallic threat items in a matter of seconds. The technology is safe for all passengers, including pregnant women, children, and those with medical implants. The millimetre waves go through clothing and reflect off the passenger's skin and whatever else is concealed, bouncing back an image that is interpreted by the machine. This image is not a naked image, but rather a generic outline of a person. The body scanners cannot see anything inside the body, including tampons or other items.
The use of AIT in airport scanners has raised concerns about privacy and safety. Early versions of the scanners did not have privacy protections, and TSA officers could view naked images of passengers. However, the TSA has since implemented safeguards for passenger privacy, and the current scanners do not show naked bodies. Passengers can also opt out of AIT screening and choose a physical screening or pat-down instead, although this may be more invasive.
AIT scanners are also designed to detect items that may be hidden under clothing or in body cavities, such as weapons or explosives. They use non-ionizing radiation, which has enough energy to move atoms in a molecule around but not enough to remove electrons from atoms. This type of radiation is considered safe, and the energy emitted by millimetre wave technology is much less than that of a standard cellphone.
Overall, AIT scanners are an effective and safe way to detect metallic and non-metallic items at airport security checkpoints, while also maintaining the privacy of passengers.
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Scanners use non-ionizing radiation, which is deemed safe by the TSA and CDC
Scanners at airports use non-ionizing radiation, which is deemed safe by the TSA and CDC. Non-ionizing radiation is a type of radiation that we are exposed to in our daily lives at low levels. According to the Centers for Disease Control and Prevention (CDC), non-ionizing radiation includes UV rays from the sun or a tanning bed, which can cause tissue damage if exposure is too high. However, millimeter waves used in airport scanners emit much less energy and are considered safe. In fact, the energy emitted by these scanners is 10,000 times less than what is emitted by a standard cellphone.
While the TSA and CDC deem this technology safe, there have been concerns raised about the potential health risks and privacy implications of airport body scanners. The "Holdren Letter", signed by world-renowned biochemists and biophysics researchers from the University of California, expressed concern about the potential serious health risks of whole-body backscatter X-ray scanners. Additionally, there have been concerns about the privacy and dignity of passengers, especially regarding the creation of nude images.
In response to these concerns, the TSA has made changes to its scanning technology. The early versions of the scanners produced detailed images of passengers' bodies, raising privacy concerns. However, the TSA claimed that employees would not be able to identify passengers based on these images. Due to legislative pressure and questions about the safety of X-rays, the TSA replaced the backscatter machines with millimeter-wave scanners, which do not produce nude images.
The new scanners use Advanced Imaging Technology (AIT) and millimeter wave imaging to detect metallic and non-metallic threat items. These scanners only show an outline of a body and alert officers to potential threats. Passengers can also see the viewing monitor throughout the scanning process, providing some level of transparency. Additionally, the TSA has stated that the body scanners cannot see anything inside the body and that alternative screening methods are offered to those who cannot undergo a body scan due to medical or physical conditions.
While the TSA and CDC deem airport scanners safe, some individuals may still have concerns about the technology. The scanners have the ability to detect items under clothing, including medical devices, which can lead to potentially embarrassing physical inspections. Additionally, the machines are set to flag any deviations from preset "male" and "female" standards, which can cause issues for transgender individuals and those with prosthetics or binders. As a result, some people may prefer a body search or opt for alternative screening methods if available.
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Scanners do not show naked bodies, but outline areas of concern
Scanners at airports do not show naked bodies, but they do outline areas of concern. Airport scanners use Advanced Imaging Technology (AIT) and millimetre-wave imaging technology to detect metallic and non-metallic threat items. The machines send millimetre waves towards a passenger's insides, which reflect off the skin and bounce back an image, which is then interpreted by the machine. This image is not a detailed image of the naked body, but rather an outline of the body with a box representing the area where the scanner has picked up something of concern.
The scanners are designed to detect items that are not permitted in carry-on luggage, such as weapons or explosive materials. They are also looking for bumps where they shouldn't be and a lack of bumps where they should be. This can cause issues for transgender people, as the scanners will flag penises and binders as suspicious, which may lead to an invasive search.
In the past, airport scanners did produce very detailed images of passengers' bodies, which caused public outcry and led to the machines being replaced. Now, passengers are able to see the viewing monitor throughout the process, and if there is no alarm, officers do not see anything at all, simply a screen reading "OK".
It is important to note that the scanners do not see anything inside the body, and the energy emitted by millimetre wave technology is 10,000 times less than what is permitted by a standard cellphone.
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Scanners can detect items such as medical devices, prosthetics, and tampons
Airport body scanners are typically used to detect metallic and non-metallic threat items, such as weapons, chemicals, and liquids that are not allowed on flights. These scanners use Advanced Imaging Technology (AIT) and emit millimeter waves that reflect off a person's body and bounce back an image to the machine. While these scanners do not show a person naked, they can detect certain items on the body, such as medical devices, prosthetics, and tampons, which may require additional screening.
Medical devices, such as catheters, can be detected by airport scanners, as they may appear as unusual items on the scan. In such cases, it is advisable to inform the Transportation Security Administration (TSA) officers beforehand to facilitate a smoother screening process and avoid any potential delays. Being open about any medical devices can help officers understand the situation and ensure your privacy is respected.
Prosthetics, including artificial limbs and other supportive devices, can also be detected by airport scanners. These scanners are sensitive enough to pick up on the unique outlines and shapes of prosthetics, which may differ from the typical human body structure. While this detection may occur, it is important to note that TSA officers are trained to handle such situations with discretion and respect for the individual's privacy.
Tampons, pads, and other menstrual products are another category of items that airport scanners can detect. While these products themselves may not consistently trigger alarms, their presence can sometimes lead to additional screening. For example, if the tampon string is visible or creates a noticeable outline, it could prompt a follow-up pat-down inspection by a female TSA officer to ensure compliance with regulations.
It is important to note that the detection of these items by airport scanners does not necessarily indicate a cause for concern. TSA officers are trained to handle these situations with professionalism and respect for passengers' privacy. In most cases, they will work efficiently to resolve any potential issues and ensure the safety and security of all individuals passing through the airport.
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Scanners have been criticised for their potential to violate human rights and invade privacy
The use of full-body scanners in airports has sparked debates about health risks and radiation exposure. Some researchers have expressed worries about the potential serious health risks associated with whole-body backscatter X-ray scanners. Additionally, the Indian government's decision to install full-body scanners in 84 airports has raised questions about the potential violation of basic human rights through virtual strip searches.
Airport scanners have also faced criticism for their potential to discriminate against certain groups, particularly transgender and non-binary individuals. Scanners with gender settings that are based on a cis, non-disabled, white image of a "standard human body" can flag prosthetics, binders, and variations in genitalia as suspicious, leading to invasive searches. This has caused distress and deterred some individuals from flying.
Furthermore, the use of scanners in airports has sparked discussions about individual rights and bodily autonomy. Some people feel that being subjected to body scans without their consent is invasive, and they should have the option to choose alternative screening methods. While others defend the necessity of these security measures, there is a growing call for policies that respect personal choices while maintaining security standards.
The controversy surrounding airport scanners highlights the delicate balance between ensuring public safety and protecting individuals' rights and privacy. As technology advances and becomes more prevalent in security settings, it is crucial to address these concerns and implement measures that respect travellers' dignity and rights.
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Frequently asked questions
No, they cannot. Airport body scanners use Advanced Imaging Technology (AIT) and millimetre wave imaging technology to detect metallic and non-metallic items that may pose a threat. While the machines can see down to the skin, they do not reveal your naked body on the screen.
If you have a medical device on your body, it is recommended that you inform the TSO (Transportation Security Officer) before entering the scanner. You may be pulled aside for a more detailed check.
Yes, you can refuse to go through a body scanner. However, you may be subjected to alternative screening methods, such as a pat-down or body search.
According to the TSA, airport body scanners are safe. The energy emitted by millimetre wave technology is significantly lower than that of a standard cellphone. However, there have been concerns raised by some researchers about the potential health risks of X-ray scanners.
