Lois Larson
Many people have concerns about the safety of their electronic devices when passing through airport security. X-ray scanners are commonly used at airports to check the contents of luggage, and some worry that these scanners may damage their electronic devices, including their hard drives. While some sources claim that airport x-ray scanners can damage laptops and hard drives, the majority of sources suggest that these scanners do not harm hard drives, as they are impervious to all forms of light, including X-rays. However, it is important to note that metal detectors and wands used at airport security may emit strong magnetic pulses that can potentially erase hard drives.
| Characteristics | Values |
|---|---|
| Can airport X-rays damage hard drives? | No, hard drives are impervious to all forms of light, including X-rays. |
| Can airport X-rays corrupt data? | Theoretically, X-rays can affect flash storage by erasing some cells, but the intensity of the X-rays used in airport scanners is too low for this to happen. |
| Are there any other risks? | Airport security may ask you to remove laptops and tablets from your bag because they are dense with materials, which can obscure other items in the bag. |
| Are there any alternatives to X-ray scanning? | Yes, you can request a hand check for film or other sensitive items. |
| Are there any other potential issues? | In rare cases, laptops have been affected by metal detectors or magnetic wands used by security staff. In addition, some users have reported issues with their laptops after going through airport security, but it is unclear if this was caused by the X-ray scanner or other factors, such as vibrations on the plane. |
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What You'll Learn
X-rays are not harmful to hard drives
While X-rays can affect undeveloped film, they do not affect hard drives. X-rays can be used to create images by capturing the shadows of objects that do not let X-rays pass through them. These images are created using an X-ray tube made to accelerate electrons from a copper cathode to a tungsten anode, resulting in a collision that produces heat and high-energy photons, or X-rays. While X-rays can damage undeveloped film, hard drives are impervious to all forms of light, including X-rays.
Additionally, the intensity of X-rays used in airport scanners is too low to affect flash storage in hard drives. Computers and tablets do not contain any components that are photosensitive to light or X-rays. While it is theoretically possible for X-rays to cause volatile memory corruption if a laptop is in sleep mode, this is unlikely to affect a hard drive.
While some people have reported issues with their laptops after going through airport security, it is more likely that the culprit is the metal detector, which uses a strong magnetic pulse that can interfere with data on a laptop. Hard drives store data magnetically, so it is important to avoid exposing them to strong magnetic fields. However, X-rays themselves will not damage a hard drive or compromise the data stored on it.
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Hard drives are sensitive to magnets, not X-rays
Magnetic storage devices, such as hard drives, are sensitive to magnets. They are not, however, sensitive to X-rays. Hard drives store data on spinning platters coated with a magnetic material. Data is written using a read/write head that floats above the disk surface, moved by an actuator arm. When exposed to a strong magnetic field, this field disruption can lead to the read/write head crashing into the disk surface, causing physical damage and data loss.
The magnets used inside hard drives are weak. They are designed to precisely control the movement of the read/write heads, not erase data. The magnets inside hard drives only generate around 10-20 gauss of magnetic field strength, while typical refrigerator magnets generate 50-100 gauss. Rare earth neodymium magnets can reach 1,200-1,500 gauss or more.
To actually damage or erase data on a hard drive requires a very powerful magnet generating a magnetic field in excess of 10,000 Oersteds. Commercial degaussing machines are specifically designed for data destruction applications and generate magnetic fields exceeding 20,000 Oersteds to thoroughly erase hard drives.
Airport X-ray scanners use live imaging to check your bags. They capture the shadows of objects that don't let X-ray particles pass through them, such as bones and metal. Objects that block X-rays, such as your phone or laptop, will show up as dark on the image while everything else will be bright.
Airport X-ray machines will not harm a hard drive. They can, however, damage undeveloped film.
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Airport X-ray machines use a specific wavelength of light
X-rays are a form of electromagnetic radiation with a very short wavelength and high energy levels. They are produced by accelerating electrons from a cathode to an anode, resulting in a collision that creates heat and high-energy photons. This process is carried out using a specialised X-ray tube. The resulting X-ray particles are directed in a specific direction to capture images of objects.
The X-ray wavelength and energy levels used in airport scanners are carefully calibrated to ensure safety and effectiveness. While X-rays have the potential to affect certain electronic devices, the intensity of airport X-rays is too low to cause significant damage to electronic devices such as laptops and hard drives. Magnetic data storage devices like hard drives are impervious to all forms of light, including X-rays, and are therefore not affected by airport scanners.
However, it is important to note that some older X-ray machines used higher levels of radiation, which could potentially impact electronic devices. Additionally, while modern carry-on X-ray systems are considered film-safe, checked baggage scanners and high-energy X-ray systems used for examining hold luggage can damage film. Therefore, it is recommended to keep film and photographic equipment with carry-on luggage or request a hand check for such items.
In summary, airport X-ray machines utilise a specific wavelength of light to ensure the safe and effective screening of carry-on items. The wavelength and energy levels are designed to penetrate materials without causing harm to electronic devices or personal belongings. While there have been rare reports of data loss on certain hard drives, the majority of travellers experience no issues when passing their electronic devices through airport X-ray scanners.
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Laptops can be damaged by airport X-rays
Laptops and their hard drives are not damaged by airport X-ray machines. Hard drives are only sensitive to magnetic charges, and X-rays are not magnetically charged. They are electromagnetic waves and do not damage electrical equipment or data.
However, X-rays can damage undeveloped film, so it is recommended to get any film with important images processed before going through airport security.
While laptops are not harmed by X-rays, they can be damaged by the metal detectors that are often found at airport security checkpoints. These emit strong magnetic fields that can erase or corrupt magnetic media. Therefore, it is recommended to back up all data on a laptop before travelling by air.
Additionally, while not unique to airports, laptops are at risk of being damaged by being dropped or knocked during travel. Laptops are also at risk of being stolen at airports, so it is important to never leave a laptop unattended.
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X-rays can damage undeveloped film
Airport authorities state that film rated 800 ISO or above may be damaged by X-ray scanning. However, some sources suggest that even film below 800 ISO can be affected. In fact, one source mentions that even after following all the guidelines, their film came back foggy.
To avoid this, it is recommended that photographers request a hand check when bringing film through TSA checkpoints. Most U.S. agents are accommodating of this request, but it may not always be granted in other countries. Photographers can also remove the film from its packaging and place it in a clear ziplock bag or a "Do Not X-Ray" film pouch, making it easier for TSA agents to understand the request.
Additionally, photographers should never pack film in their checked baggage as this goes through high-powered CT scanners that can cause immediate and irreversible damage to the film. Even the best processing labs cannot fix film that has been fogged by these machines.
It is also important to keep film cool and insulated, as heat can also damage film.
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Frequently asked questions
No, according to some sources, the hard drive in a laptop can be damaged by an airport x-ray scanner. However, other sources claim that airport x-ray scanners are safe for laptops and that hard drives are only sensitive to magnetic charges.
Hard drives, USB thumb drives, MP3 players, cell phones, smartphones, and other electronics are not affected by x-rays unless otherwise stated by the hardware manufacturer.
Undeveloped film can be damaged by airport x-ray scanners.
