Radiation in Mall Entrances: Are X-rays Really Used?

It's a common concern among shoppers and visitors that mall entrances might use X-ray equipment to screen for potential security threats. However, this notion is largely misguided. Let's dive into the facts and dispel any concerns you might have about radiation exposure in such settings.

Understanding X-ray Usage in Mall Security

Are X-rays used at mall entrances? Typically, X-ray machines are not used for security screening at mall entrances. The primary method for security screening is the metal detector, which uses magnetic fields rather than X-rays. This is based on the first principle of radiation protection, which states that the benefits of using ionizing radiation must outweigh the potential detriments. Since the deployment of X-rays in such a setting would not likely provide a significant benefit, it is not a common practice.

Alternative Security Measures at Malls

The scanners found at mall entrances are primarily metal detectors or RFI devices that specifically detect magnetic tags. These devices are designed to protect against theft by detecting unauthorized tags on clothing or personal items. Even in rare cases where 'backscatter' X-ray devices are used, they deliver a dose far below harmful levels.

Understanding Radiation Exposure

The amount of radiation exposure at a mall entrance is essentially zero, or almost negligible. The background radiation you experience daily, including cosmic rays, far exceeds any potential exposure from these devices. For instance, the latest 'backscatter' X-ray devices used for screening deliver about 20 nanoSv per scan, which is far less than your yearly exposure to natural background radiation.

Some may wonder if running back and forth from their cars to the mall entrance could increase exposure to X-rays. However, the exposure from X-rays is so minimal that these movements have no significant impact on the overall exposure level.

Conclusion: Relax and Enjoy Your Shopping Experience

For the vast majority of people, the amount of radiation exposure from mall entrance security devices is practically non-existent. These devices are designed to keep the public safe without posing a significant health risk. So, go ahead and enjoy the free Wi-Fi available in most malls.

Remember, the key message is 'what me worry?' as the exposure is so minimal that it's not something to concern yourself with. By keeping this in mind, you can relax and focus on your shopping or festive activities without any radiation-related worries.