Faraday Bag For Key?

[Bonehead]

If the fob is locked in the car, it will not let you open it without another fob, key pad code, or PAAK.

So, if you're outside the car and the fob is locked inside, it doesn't matter whether you wrap it in something or not. If you're both inside, why bother. If you're both outside, why bother.

Why bother? Because I like to use the walk-away lock feature.

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[shutterbug]

Absent a PAAK, If you place your key fob inside your "Mach E faraday cage" and push the start button the car will start. If you place your key fob inside a faraday pouch inside your "Mach E faraday cage" the car will not start. How is that, the pouch not doing anything? The Mache E is a faraday cage in the sense that it will protect you from lighting. But it will not stop electromagnetic fields. If it did you would not be able to start, unlock, etc. the car remotely.

It will stop you from unlocking the car, if the fob is inside.

 

[shutterbug]

The why bother part is an attempt to keep a smash and grabber from driving the car off. As stated previously, the cheap bags available (and a lot of the expensive ones) only attenuate the signal. Without a bag the car is almost sure to start. With it, it probably won’t but could. Just don’t leave the key in the car. Period. It’s a huge security risk. ?‍?

Also note that if the key is left in the car, the person who has gotten access to it can reset everything and remove the car from your FordPass account. Would you leave a signed copy of your deed sitting out in your home for a thief? ??

Thieves will have very little problem locating your fob hiding place, and then the puch will make no difference.

 

[Old_Norm]

It will stop you from unlocking the car, if the fob is inside.

What? If the fob is inside the faraday pouch in the car you can open the car with PAAK, the door pad or another key fob. No offense, but I'm not sure you know how a faraday pouch works.

 

[Old_Norm]

what is the right size for the faraday pouch for our key fob?

This one works great for me.
https://www.amazon.com/gp/product/B0B4DNQZ34/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

[Old_Norm]

Thieves will have very little problem locating your fob hiding place, and then the puch will make no difference.

And how exactly would they locate it? First they would have to get into a locked car. Second they would have to know the fob was in the car. Third they would have to tear up the carpet, search under the dash or look in any number of other places, all the while worrying about being discovered. Exaggeration is not a substitute for facts.

 

[HuntingPudel]

And how exactly would they locate it? First they would have to get into a locked car. Second they would have to know the fob was in the car. Third they would have to tear up the carpet, search under the dash or look in any number of other places, all the while worrying about being discovered. Exaggeration is not a substitute for facts.

Thieves always know the hiding spots for keys. Us regular citizens might like to fantasize that our hidey holes are smart places to stash things, but experienced thieves know these places. That is a fact. Ask insurance adjusters or cops. Do not hide keys. Take them with you. ?‍?

 

[Old_Norm]

Corvette, exotic cars maybe. But not the Mach E. Regardless, we are all free to do our own thing.
https://fordauthority.com/2024/08/ford-mustang-mach-e-among-least-stolen-vehicles/

 

[JeffGo]

I bought this one (2 pack) Amazon.com: Ironstripe Faraday Bag for Key Fob (2pack), One-Size-Fits-All, Premium Quality Royal Blue Stitching Faraday Key Fob Protector, RFID Key Fob Protector Case, Faraday Pouch : Automotive
Tested both, several times, and they do work. I was using foil but that was ugly, lol, and might not have been totally effective.

 

[shutterbug]

What? If the fob is inside the faraday pouch in the car you can open the car with PAAK, the door pad or another key fob. No offense, but I'm not sure you know how a faraday pouch works.

The last time I took physics was almost 50 years, but the way faraday cage (that includes pouches produced by slave labor in China) still work the same. Since the car is a faraday cage, the fob left inside will not open the car from the outside.

 

[shutterbug]

Thieves always know the hiding spots for keys. Us regular citizens might like to fantasize that our hidey holes are smart places to stash things, but experienced thieves know these places. That is a fact. Ask insurance adjusters or cops. Do not hide keys. Take them with you. ?‍?

Yes! This!

 

[Old_Norm]

The last time I took physics was almost 50 years, but the way faraday cage (that includes pouches produced by slave labor in China) still work the same. Since the car is a faraday cage, the fob left inside will not open the car from the outside.

Honestly, you should just give up. I just locked myself in the MME with the key fob inside. I then unlocked the car with the key fob from inside the vehicle. I then locked my wife's key fob in the MME and unlocked it with my key fob from outside the car. I also unlocked it (with the key fob locked in the car) with FordPass and the door key pad. While technically the MME is a faraday cages it will not block electromagnetic waves. Your idea that the Mach E and a faraday pouch are the same thing is comparable to saying a Yugo and an Aston Martin are both cars so they are equal. You really should stop spreading false information.

 

[shutterbug]

Honestly, you should just give up. I just locked myself in the MME with the key fob inside. I then unlocked the car with the key fob from inside the vehicle. I then locked my wife's key fob in the MME and unlocked it with my key fob from outside the car. I also unlocked it (with the key fob locked in the car) with FordPass and the door key pad. While technically the MME is a faraday cages it will not block electromagnetic waves. Your idea that the Mach E and a faraday pouch are the same thing is comparable to saying a Yugo and an Aston Martin are both cars so they are equal. You really should stop spreading false information.

Let's go through this in order:

1. You and the fob are both inside the car. The car can be unlocked with the fob. This is expected.
2. The fob is locked inside the car. You then unlocked the car using the 2nd fob from out side. This is is expected.
3. The fob is locked inside the car. You then unlocked the car using Fordpass or key pad code. This is expected.

This is what you didn't try. Lock the fob in the car. Make sure your phone and the other fob are out of range completely. Make sure that all windows are fully rolled up. Press the door entry button. Does the door open? If not, the car is operating as a faraday cage and exhibiting expected behavior.

 

[ralteredstates]

I have used a faraday bag with one of the keys kept in the glove box. I expect the PAAK to fail to work at some point (it has already) and I will just open the car with the keypad and take the key out of the glove box. I haven't had any issues with this for 4 months. Just extra security. BTW, I'm not paranoid about someone breaking into my car, finding the key fob and driving away.

 

[Mach-Lee]

The last time I took physics was almost 50 years, but the way faraday cage (that includes pouches produced by slave labor in China) still work the same. Since the car is a faraday cage, the fob left inside will not open the car from the outside.

The car is not a faraday cage. Otherwise your cell phone wouldn’t work inside. RF can pass through the glass windows.

The car has antennas everywhere inside and outside, so it knows if the key is inside or outside the car at all times. When you lock a fob inside the car, it remembers that, and won’t let you unlock the car from the outside with it. A valid fob must be detected OUTSIDE the vehicle for it to unlock when you press the door open button. Software enables it, not because of a faraday cage effect.

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