Lois Larson
X-rays are a type of electromagnetic radiation, similar to visible light but with a shorter wavelength and a higher frequency. While X-rays can affect undeveloped film, the question of whether they can impact digital memory cards is more complex. Some travellers have reported losing data on their SD cards after passing through airport scanners, but others claim that their cards have been unaffected. Experts suggest that while X-rays can theoretically affect flash storage, the intensity of airport scanner X-rays is too low to cause data loss.
| Characteristics | Values |
|---|---|
| Can airport x-rays affect memory cards? | No, memory cards are much more immune to airport security scanners. |
| Can airport x-rays affect undeveloped films? | Yes, the higher-energy X-rays can pass through the plastic film container and ruin images. |
| Are there alternatives to putting memory cards through airport x-rays? | Some photographers prefer to carry memory cards in their pockets and walk through the personnel scanner. |
| Are there other ways to protect memory cards from airport x-rays? | Lead-lined film pouches can be used, but they are heavy and may encourage airport security to increase the volume of X-rays. |
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Airport X-rays are unlikely to affect memory cards
Airport X-ray scanners are unlikely to affect memory cards. Memory cards are much more immune to airport security scanners than film. Film reacts to light and radiation, and it doesn't take long for an X-ray machine to completely wipe a roll of undeveloped film.
Extensive tests have been conducted by multiple organisations and manufacturers that confirm that airport security scanners do not affect memory cards. This is because computers and tablets don't have any components in them that are photosensitive to visible light or to X-rays. While theoretically, X-rays can affect flash storage by erasing some cells, the intensity of the X-rays used in an airport scanner is so low that this never actually happens.
Additionally, the Earth is constantly exposed to radiation, most of which comes from the sun. Therefore, electronic devices are exposed to more background radiation while in-flight than they receive when passing through an airport scanner.
While some people have reported issues with their memory cards after going through airport security, these problems are likely coincidental, as memory cards are notoriously unreliable, or due to other factors such as the high ISO of the images on the card.
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Memory cards are immune to airport X-rays
Although X-rays can theoretically affect flash storage by erasing cells, the intensity of X-rays used in airport scanners is too low for this to occur. The main risk of X-rays is to undeveloped film, which can be ruined by the radiation. However, memory cards are not affected in the same way, and there is no need to worry about data loss when passing through airport security.
While some people have reported problems with memory cards after going through airport security, these issues are likely coincidental or related to other factors. Memory cards are known to be unreliable, and it is possible that any data loss or errors are unrelated to the X-ray scanners. In fact, electronics are exposed to more background radiation while in flight than they receive when passing through airport scanners.
Overall, there is no need to worry about putting memory cards through airport X-ray scanners. They will not be affected by the radiation and your data will remain safe.
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Airport X-rays can affect undeveloped film
Airport X-ray scanners use electromagnetic radiation to create images of the contents of luggage. This radiation passes through objects like plastic, skin, and tissue, but not bones or metal. The intensity of the X-rays used in airport scanners is quite low.
Undeveloped film, however, is sensitive to this radiation. The higher-energy X-rays can pass through the plastic film container and ruin the images. This is more likely to occur with film that is very photosensitive and high-speed. Regular films are less likely to be affected. Nevertheless, it is recommended to have any film with important images processed before travelling to avoid any risk of damage.
Manufacturers of X-ray machines claim that film rated under 800 ISO will not be impacted. However, some photographers have reported mixed experiences, with film being affected even at speeds below 800 ISO. Lead-lined film pouches are available to protect film from X-rays, but their effectiveness is questionable, and they may draw unwanted attention from security personnel.
The newer CT scanners found in some airports are a more significant concern for photographers. These scanners emit higher doses of radiation, which can cause serious damage to undeveloped film. Kodak Alaris, Ilford, and Fujifilm have confirmed that their films can be damaged by CT scanners, even at various speeds. This damage can result in a substantial loss of detail and colour accuracy, with images appearing "overcooked" and lacking sensitivity.
To avoid potential damage, photographers can request a hand inspection of their film by airport security. This is usually accommodated, especially in the United States. Alternatively, some photographers choose to mail their exposed film directly to a processing lab rather than risk transporting it through airport security.
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The intensity of airport X-rays is too low to affect memory cards
While X-rays are a form of radiation with a shorter wavelength and a higher frequency than visible light, the intensity of the X-rays used in airport scanners is too low to affect memory cards.
X-rays are ionizing radiation, meaning they can remove electrons from atoms or molecules, potentially causing damage. However, the X-rays used in airport security scanners are not powerful enough to cause any harm to electronic devices. In fact, computers and tablets don't contain any components that are photosensitive to visible light or X-rays.
While it is theoretically possible for X-rays to affect flash storage by erasing some cells, the low intensity of airport X-rays means this is not a practical concern. Extensive tests by multiple organizations and manufacturers have confirmed that airport security scanners do not affect memory cards.
Additionally, memory cards are solid-state storage devices, which are much more resilient than the magnetic media in laptop hard drives. They can withstand immersion in water and other harsh conditions without losing data. Therefore, the low-intensity X-rays used in airport security pose no risk to memory cards.
While some people have reported issues with memory cards after passing through airport security, these problems are likely coincidental or unrelated to the scanners. Memory cards are known to be unreliable, and it is more likely that any data loss or malfunction is due to other factors. Overall, there is no need to worry about the impact of airport X-rays on memory cards, as the intensity of the radiation is too low to cause any damage.
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Some people have experienced memory card issues after airport X-rays
While some people have experienced memory card issues after airport X-rays, it is unclear whether the X-rays are the direct cause of the problems. Some sources suggest that memory cards are immune to airport X-ray scanners and that any issues are coincidental or due to other factors.
One source mentions that they have lost data on two SD cards that went through X-ray scanners. However, they acknowledge that this could have been due to other reasons and that a controlled experiment would be needed to prove a direct causal link. Another source mentions experiencing a "memory card error" after going through airport security, but it is unclear whether the issue was permanent or resolved after reformatting the card.
It is important to note that memory cards do not react to light and radiation in the same way that film does. Film can be affected by airport X-rays, especially if it is a particularly photosensitive and high-speed film. However, memory cards are not expected to suffer the same fate.
Some photographers choose to carry their memory cards in their pockets and go through the personnel scanner to avoid putting their cards through the conveyor belt scanner. Others opt for hand checks, although this may not always be feasible or effective, as X-rays can penetrate plastic film containers and lead-lined pouches.
While there may be anecdotal reports of memory card issues after airport X-rays, the consensus seems to be that modern memory cards are generally unaffected by airport X-ray scanners. The intensity of the X-rays used in airport scanners is typically too low to cause data loss in memory cards. Additionally, computers and tablets do not contain any components that are photosensitive to X-rays.
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Frequently asked questions
Memory cards are much more immune to airport security scanners than undeveloped film. While it is theoretically possible for X-rays to affect flash storage by erasing some cells, the intensity of the X-rays used in airport scanners is too low for this to happen. Computers and tablets also do not have any components that are photosensitive to X-rays.
Other electronic devices, such as phones and laptops, are also not affected by airport X-ray scanners. However, some people have reported issues with SIM cards failing after going through airport security.
If you are concerned, you can choose to carry your memory card with you through a personnel scanner rather than placing it on the conveyor belt scanner. Alternatively, you can request a hand check for your memory card, although this may slow down the security process.
