EVMan
Posts: 314
Joined: Sat Feb 25, 2017 4:31 pm
Location: USA, CA

Comfort Access - Safety

Sun Oct 21, 2018 8:23 pm

So i discovered this thing recently : RF id relay to steal cars
I guess the comfort access is same as key-less entry in the i3 ??? and comfort access is less safe then the buttons ???

So i understand , i need to keep my keys safe inside my house and not near the garage and the keys should be shielded , when i have them ?

https://www.youtube.com/watch?v=PpcQH_DKSm4
https://electrek.co/2018/10/21/tesla-st ... yfob-hack/

Can someone confirm my understanding ?
Can we do something to make it safer ? i guess the comfort access needs to be disabled for more safety
2017 33KWH Rex
Model 3 Long Range
Solar ToU Plan

Gif
Posts: 237
Joined: Mon Jun 06, 2016 12:24 pm
Location: Bottom right hand corner of Wales

Re: Comfort Access - Safety

Mon Oct 22, 2018 11:58 am

Any key that doesn't need pressing to access the car is at risk. The solution is simple.

1. Buy tin of cookies (in an actual metal tin).
2. Eat said cookies!
3. Brush out crumbs from tin and place it where you normally keep your keys
4. Place keys (including spare) in tin
5. Keep lid closed

If you want to test the solution, take the tin containing the keys to the car door and try to get in. The car should refuse as it cannot see the RF signal from the key.

Don't bother with all the fancy gismos online called Faraday cages etc etc. Cookies are tastier!

:D

EVMan
Posts: 314
Joined: Sat Feb 25, 2017 4:31 pm
Location: USA, CA

Re: Comfort Access - Safety

Mon Oct 22, 2018 12:16 pm

Good suggestion. Just wanted to add, if some one does not want to eat all the cookies themselves, they can share them too with others!!
2017 33KWH Rex
Model 3 Long Range
Solar ToU Plan

jadnashuanh
Posts: 4990
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Comfort Access - Safety

Mon Oct 22, 2018 12:36 pm

There are RFID bags available if you don't want a tin. If you've ever bought memory modules, they probably came in one. They are also static control. Read one story about someone sending back their EasyPass to the state to close their account. INstructions say to place it in the static bag before shipping. They didn't, got charged all along the way as the delivery truck went through tolls pinging their transponder.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV
Soon (hopefully!) A 2021 X5 45e will replace the above

EVMan
Posts: 314
Joined: Sat Feb 25, 2017 4:31 pm
Location: USA, CA

Re: Comfort Access - Safety

Mon Oct 22, 2018 12:51 pm

jadnashuanh wrote:There are RFID bags available if you don't want a tin. If you've ever bought memory modules, they probably came in one. They are also static control. Read one story about someone sending back their EasyPass to the state to close their account. INstructions say to place it in the static bag before shipping. They didn't, got charged all along the way as the delivery truck went through tolls pinging their transponder.

Good point again, without spending too much money....
While we have not seen cases like this in USA, its so quick and easy to steal like this, that its a matter of time....
2017 33KWH Rex
Model 3 Long Range
Solar ToU Plan

Gif
Posts: 237
Joined: Mon Jun 06, 2016 12:24 pm
Location: Bottom right hand corner of Wales

Re: Comfort Access - Safety

Mon Oct 22, 2018 12:58 pm

Concern I’d have is there are plenty of examples in reviews of those pouches not working. Double bagging has been suggested but that’s a real faff.

The tin works and can hold more than one set of keys and bunches of keys.

EVMan
Posts: 314
Joined: Sat Feb 25, 2017 4:31 pm
Location: USA, CA

Re: Comfort Access - Safety

Mon Oct 22, 2018 1:07 pm

Gif wrote:Concern I’d have is there are plenty of examples in reviews of those pouches not working. Double bagging has been suggested but that’s a real faff.

The tin works and can hold more than one set of keys and bunches of keys.

How about a Tin Can, with a height of 8-10 inches, with no cap. Will that be safe ?
No need to open / close each time.

When out doors, can order a cheap ebay Chinese unbranded type case .
2017 33KWH Rex
Model 3 Long Range
Solar ToU Plan

Gif
Posts: 237
Joined: Mon Jun 06, 2016 12:24 pm
Location: Bottom right hand corner of Wales

Re: Comfort Access - Safety

Mon Oct 22, 2018 1:13 pm

Probably won’t be sufficient to stop the signal getting out. I’d keep it shut to be 100% safe. No doubts then.

Free the catch off so it just flaps shut without being held in position. Easy to open then.

EVMan
Posts: 314
Joined: Sat Feb 25, 2017 4:31 pm
Location: USA, CA

Re: Comfort Access - Safety

Mon Oct 22, 2018 1:18 pm

Gif wrote:Probably won’t be sufficient to stop the signal getting out. I’d keep it shut to be 100% safe. No doubts then.

Free the catch off so it just flaps shut without being held in position. Easy to open then.

NFC works around 13GHz, and the waves are i believe very directional at that wavelength.
2017 33KWH Rex
Model 3 Long Range
Solar ToU Plan

bagekko
Posts: 6
Joined: Fri Sep 28, 2018 12:15 pm

Re: Comfort Access - Safety

Tue Oct 23, 2018 12:41 pm

This is nothing new and thieves have been stealing cars for 10yrs using this method. There have been updates that have made it tougher but nothing will stop the really intelligent hackers from getting around it.

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