What TSA body scanners display to security officers

TSA body scanners at airport checkpoints do not show officers a naked image of you. The machines create a generic outline of your body shape and flag areas where metal or other dense materials are detected — they do not display your face, genitals, or any identifying details. The image looks more like a straightforward silhouette with highlighted zones than a photograph.

The TSA uses two main scanner types at U.S. airports: millimeter wave scanners and backscatter X-ray machines. Millimeter wave scanners, which are far more common, bounce radio waves off your body and detect what bounces back. Backscatter machines, which are rarely used now, work differently but still do not produce a photographic image. Both types are designed to detect threats like weapons or explosives, not to create images for identification or surveillance purposes.

Key Takeaways

  • TSA scanners show only a generic body outline with highlighted threat areas, not facial features or intimate details.
  • Millimeter wave scanners, the standard at most U.S. airports, use radio waves and do not penetrate clothing or skin.
  • Images are viewed in a separate room by a single officer and are not stored, recorded, or transmitted.
  • You can request a pat-down search instead of going through a scanner if you prefer not to use one.
  • TSA officers are trained and required by federal policy to treat all passengers with respect during screening.

How millimeter wave scanners work

Millimeter wave technology sends radio waves across your body and measures what reflects back. These waves do not penetrate your skin or clothing — they bounce off the surface. The scanner then converts this reflection data into a straightforward outline image that shows your body's general shape and any objects on or near your body that reflect the waves differently than skin or fabric do.

The image displayed to the officer is deliberately generic. It does not show your face, hair color, scars, tattoos, or any other identifying marks. If the scanner detects something suspicious — a metal object, a dense material, or an unusual shape — it highlights that area on the outline so the officer knows where to look or pat down. The officer sees only this outline and the highlighted zones, nothing more.

Where the image goes and who sees it

When you walk through a millimeter wave scanner, the image is viewed by a single TSA officer in a separate room or booth. That officer cannot see you directly and cannot identify you by name or appearance. The image is not stored on a hard drive, not sent to a database, and not recorded for later review unless a security incident occurs that requires investigation.

Once the scan is complete and you move forward, the image is deleted. TSA policy requires that images be erased when ready after the screening decision is made. The only exception is if the officer flags a potential threat — in that case, the image may be retained temporarily as part of an investigation, but it is still not linked to your identity in any permanent record.

What happens if the scanner detects something

If the millimeter wave scanner highlights an area on your body, the officer will ask you to step aside for additional screening. This usually means a pat-down search by a same-gender officer, a physical inspection of your carry-on bag, or both. The officer may also ask you to remove shoes, a belt, or other items to check them separately.

A pat-down is a physical search where an officer uses their hands to feel your clothing and body in specific patterns. TSA officers are trained to conduct these searches professionally and respectfully. You have the right to request a same-gender officer, to have a companion present during the pat-down, and to ask for a private screening area if you prefer.

Your right to refuse the scanner

You do not have to go through a body scanner. If you decline, TSA will offer you a pat-down search instead. This is your legal right, and refusing a scanner will not result in fines, arrest, or being banned from flying. You straightforward tell the officer you prefer not to use the scanner, and they will direct you to the pat-down line.

Some travelers choose pat-downs for privacy reasons, religious reasons, medical reasons, or personal preference. The pat-down takes longer than a scanner — usually five to ten minutes — so plan accordingly if you are traveling during a busy time. Both screening methods are designed to detect the same threats, so choosing one over the other does not make you more or less safe.

Backscatter scanners and why they are rarely used now

Backscatter X-ray machines were used at some U.S. airports between 2008 and 2013. These machines worked by bouncing low-level X-rays off your body, and they produced images that were more detailed than millimeter wave images — detailed enough that privacy advocates raised concerns. The TSA eventually phased out backscatter machines in favor of millimeter wave technology, which provides the same security benefit with less detailed imagery.

Today, backscatter scanners are essentially gone from U.S. airport security lines. If you encounter a body scanner at a major U.S. airport, it is almost certainly a millimeter wave machine. Some international airports may still use backscatter or other technologies, but U.S. domestic travel relies on millimeter wave scanners as the standard.

TSA officer training and privacy rules

TSA officers who view scanner images receive training on privacy and professional conduct. Federal policy requires that officers treat all passengers with respect and dignity during screening. Officers are instructed not to comment on body shape, size, or appearance, and they are prohibited from taking photographs or recordings of scanner images.

If you believe an officer has violated your privacy or treated you disrespectfully, you can file a complaint with TSA. You can submit a complaint online through the TSA website, by mail, or by speaking with a supervisor at the airport. TSA takes privacy complaints seriously and investigates allegations of misconduct.

Frequently Asked Questions

Can TSA officers see my face in the scanner image?

No. Millimeter wave scanners create a generic body outline without facial features, identifying marks, or details. The officer cannot tell who you are from the image alone.

Are scanner images stored or shared with other agencies?

Images are deleted when ready after screening unless a security threat is flagged. They are not stored in a database, not shared with law enforcement, and not used for any purpose other than that single screening event.

Do I have to go through a scanner if I am pregnant?

No. You can request a pat-down instead. Millimeter wave scanners are considered safe during pregnancy, but if you prefer not to use one, a pat-down is always available as an alternative.

What if I have a medical device like a pacemaker?

Tell the officer before screening. Some medical devices are not affected by millimeter wave scanners, but others may be. The officer can help you choose the safest screening method — usually a pat-down — and may contact a supervisor if needed.

Can I request a pat-down instead of a scanner?

Yes. You have the right to decline the scanner and request a pat-down at any time. straightforward tell the officer your preference, and they will direct you to the pat-down screening area.