The Curious Case of the Key Fob and the Human Antenna

The Curious Case of the Key Fob and the Human Antenna — Have you ever found yourself in a vast parking lot, squinting at rows of cars, trying to locate your trusty steed among the sea of metal? You press the unlock button on your key fob, but alas, no familiar beep or flash of headlights. You’re too far away. But then, you remember a quirky trick – lifting the key fob to your neck, and suddenly, the car responds. It’s like magic, but it’s actually science.

The Curious Case of the Key Fob and the Human Antenna

The Curious Case of the Key Fob and the Human Antenna — Have you ever found yourself in a vast parking lot, squinting at rows of cars, trying to locate your trusty steed among the sea of metal? You press the unlock button on your key fob, but alas, no familiar beep or flash of headlights. You're too far away. But then, you remember a quirky trick – lifting the key fob to your neck, and suddenly, the car responds. It's like magic, but it's actually science.

Why Does This Happen?

The reason your key fob works better when held to your neck, or even your head, is due to the wonders of human biology and physics. Our bodies are composed of about 73% water⁶, and water is a good conductor of electricity. When you hold the key fob to your neck, your body acts as an antenna, extending the range of the fob’s signal.

The Science Behind It

Key fobs operate using radio frequency (RF) signals. Typically, these signals are at a frequency of 315 MHz, with a wavelength of about 1 meter⁹. When you hold the key fob close to your body, the water within acts as a conductor, creating a larger surface area for the signal to bounce off. This effectively turns your body into a temporary antenna, amplifying the signal’s strength and reach.

The Best Position

Experiments and anecdotal evidence suggest that pressing the key fob against the temple or under the chin provides the best results¹. This position likely aligns the fob with parts of the body that have cavities, such as the sinuses in your head, which can act as resonance chambers for the RF signal, much like the hollow body of a guitar amplifies the sound of the strings.

Safety Concerns

For those worried about safety, fear not. This technique is completely safe. The RF signal from a key fob is very weak and poses no health risk when amplified by your body¹.

A Practical Tip

Next time you’re struggling to find your car in a crowded lot, just remember this neat trick. Hold your key fob to your neck, and let your body’s natural conductivity extend its reach. It’s a simple hack that combines a bit of science with a touch of human ingenuity.

So, the next time you’re out there, give it a try. Who knew that the key to unlocking your car from a distance was literally right under your nose?


Isn’t it fascinating how everyday objects can teach us about the principles of science? The key fob phenomenon is just one example of how our daily lives are filled with hidden wonders waiting to be explored. So, keep your curiosity alive, and don’t be afraid to try out those odd tips and tricks – they might just have a scientific explanation after all!

Sources:

  1. Health Line
  2. Stack Exchange
  3. Holding a Key Fob to Head Boosts How Far Away You Can Remotely Lock …
  4. Why does a remote car key work when held to your head/body?
  5. Car Hack: How to Extend Car Remote Range – Direct Auto
  6. Keyfob Distance So The Car Sensor Doesn’t Suck Power
  7. Car Key Fob Problems: 4 Common Issues & Solutions
  8. NY Times
  9. BBC
  10. Vox
  11. Car Throttle
  12. Video no longer available
  13. 40 Year Guy | Facebook

Subscribe To Courageous Christian Father!


Subscribe

Don’t miss any blog posts! Subscribe today! You can subscribe via WordPress or by entering your email! Thank you!

Follow Courageous Christian Father on WordPress.com

Join 1,617 other subscribers

Don’t forget to also share blog posts you love on your favorite social media too! Thank you! Sharing is caring!

Follow Steve Sews on Social Media


Below are some examples of blog entries from all the blogs that I do. (Courageous Christian Father, Steve Sews Stuff, and SteveZ DesignZ). 

Loading RSS Feed

Recent Posts

  • The Parade of Planets
    The Parade of Planets — As we approach the middle of 2024, the cosmos is preparing a breathtaking show for us, an event that’s as rare as it is spectacular: the Parade of Planets. On June 3, 2024, skywatchers and astronomy enthusiasts will have the unique opportunity to witness six of our solar system’s planets align in a stunning display of celestial synchronicity.
  • Pentecost
    Pentecost – occurs 49 days after Easter, the 7th Sunday after Easter. The day when the Holy Spirit came across the people while they were in Jerusalem. This account is found in Acts 2. #Pentecost
  • Armed Forces Day
    Armed Forces Day: A Special thank you blog post to all the men and women in the Armed Forces. May God watch over you and your family. #ArmedForcesDay
  • World NF Awareness Day & Month
    World NF Awareness Day and Month – This is an awareness day that hits very close to home as I have Neurofibromatosis (NF). My mother, uncle, and cousins have NF. Some cities are gonna Shine A Light on NF on this day. #EndNF #WorldNFDay #Neurofibromatosis
  • Happy Mother’s Day
    Happy Mother’s Day: A Special greeting for all the moms, Bible verses on “Mother” & a list of all blog entries pertaining to mom. #MothersDay #Moms

Thank You For Reading Courageous Christian Father!


Thank you for reading. Please feel free to share and like this blog post.

About the Author

Author: Steve Patterson

A Christian Blogger that enjoys blogging about the Bible, Theology, God, Jesus Christ, Christian Music, Family, Cats, Odd Holidays, sewing and much more. I have been blogging since 2004, however, I have been blogging on Courageous Christian Father since 2012. I enjoy listening to Christian Music. I am married with 1 daughter, 2 step-sons and a step daughter.

Feel free to share your comment! Thank you!

This site uses Akismet to reduce spam. Learn how your comment data is processed.