ITSC eNewsletter, Issue 148 17 Jan, 2014

1. A Blissful Year of the Horse
2. Heads Up While Creating Online Form
3. We are Geared Up for Your Budget Work!
4. Your CU Memory: A Wonderful Hall to the Magical Mall
5. Goodbye, CUHK e-Card Service
6. Get Your CUHK VPN On and Off - Reminder for Win 8 / Win 8.1 Users
7. Support a Green CUHK – Avoid Garbage Printing
8. CU Hot Job! New Student Computer Assistants Recruitment
9. User Areas, Learning Commons and CU Link Card Centre Opening Hours during Chinese New Year Holidays (30 Jan – 3 Feb)
10. Feature: Is Wi-Fi Harmful to My Health?

Back to this issue

10. Feature: Is Wi-Fi Harmful to My Health?

Nowadays, we use Wi-Fi every day. It is such a powerful technology like it can go everywhere, to your house, into the mall and even on the street; but have you ever thought that Wi-Fi may also "penetrate" into your body, making your heart pounding fast, causing your heart palpitates and even attacking your body? 

Here you could know if Wi-Fi is harmful to your health.


Q: What is Wi-Fi?

A: Wi-Fi is a technology that allows electronic devices to exchange data wirelessly by the radio waves like TV and radios. It ranges from 2.4 to 5 GHz.


Q: Does it carry radiation?

A: Yes, but the level is very low. A research from the British Health Protection Agency said that exposing to Wi-Fi for a year is just as talking to the cell phone for 20 minutes.


Q: Does Wi-Fi radiation penetrate our body like X-ray?

A: No, they generate different types of signal. Wi-Fi is of the non-ionising type, unlike the ionising X-ray which would bring significant harm to our body.


Q: Will my body be affected while exposing to Wi-Fi?

A: Probably no. According to the scientific research from different expert panels, government and health authorities, there is no established evidence to illustrate that Wi-Fi would harm one's health.


Q: How if I am a child, elderly, pregnant or ill?

A: No worry, Wi-Fi still cannot hurt you. As all Wi-Fi devices are bounded by the international exposure standards endorsed by the World Health Organization, which takes all population, including children, elderly, ill and pregnant into account.


Q: How about the CUHK Wi-Fi? Is it safe to stay at CUHK with Access Points (APs) all around?

A: Certainly in CUHK, you are safe to walk around. University centrally installed Wi-Fi devices, Aruba AP, are certified by the Wi-Fi Alliance, an internationally recognized trade association which continually monitors information regarding health and Wi-Fi products.  Therefore, you are safe to use them.


If you want to know more about Wi-Fi and health, you are welcome to visit

1.   The webpage of the World Health Organization

2.     Data sheet of CUHK Wi-Fi device

3.     Wi-Fi Health brochure from the Wi-Fi Alliance

4.     Government: Wi-Fi and health

5.     OFTA: Public Wi-Fi Installations in Hong Kong  

The Wi-Fi is on! Will it harm your health?

We hope you enjoy reading the ITSC eNewsletter. As always, we would like to know how you think about the ITSC eNewsletter and how we can make it more useful to you. Please write your comment to ITSC Service Desk.

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