krellor

joined 1 year ago
[–] [email protected] 2 points 8 months ago* (last edited 8 months ago)

Hey, sorry it took so long to see your question. Here is a paper (PDF) on the subject with diagrams.

https://www.research-collection.ethz.ch/bitstream/handle/20.500.11850/42365/eth-4572-01.pdf

The link is composed of two parts, the emitter and the receiver. The emitter captures the LF signal and up-converts it to 2.5 GHz. The obtained 2.5 GHz signal is then amplified and transmitted over the air. The receiver part of the link receives this signal and down-converts it to obtain the original LF signal. This LF signal is then amplified again and sent to a loop LF antenna which reproduces the signal that was emitted by the car in its integrity.

Edit: and here is a times article that covers the problem in one area. https://www.nytimes.com/2024/02/24/world/canada/toronto-car-theft-epidemic.html

[–] [email protected] 5 points 8 months ago (2 children)

Yeah. Shockingly people store things where it is convenient to have them. :) I'm glad I didn't have a keyless system to with about.

[–] [email protected] 4 points 8 months ago

I did read the article. I'm unfamiliar with the "hacking" tools or methods they mention given they use terms like emulator. I was simply sharing one wireless attack that is common in certain areas and why.

[–] [email protected] 8 points 8 months ago (8 children)

I think most of the wireless attacks aren't trying to be so sophisticated. They target cars parked at home and use a relay attack that uses a repeater antenna to rebroadcast the signal from the car to the fob inside and vice versa, tricking the car into thinking the fob is nearby. Canada has seen a large spike in this kind of attack. Faraday pouches that you put the fob inside of at home mitigates the attack.

[–] [email protected] 3 points 8 months ago (4 children)

I'm not sure about what the article is referencing, which is probably a little more exotic, but relay attacks are very common against keyless cars. Keyless cars are constantly pinging for their matching fob. A relay attack just involves a repeater antenna held outside the car that repeats the signal between the car and the fob inside the house. Since many people leave the fob near the front of the house, it works and allows thieves to enter and start the car. Canada has has a big problem with car thieves using relay attacks to then drive cars into shipping containers and then sell them overseas.

[–] [email protected] 8 points 9 months ago

With coffee ~~all things~~ heart palpations are possible. It took me about a year and a half between work and studies. Definitely not a day. 😀

[–] [email protected] 12 points 9 months ago

That's awesome, but no, they made something far more useful, lol. I'm glad to see projects like that though; it's a lost art!

[–] [email protected] 48 points 9 months ago (5 children)

Years and years ago I built my own 16 bit computer from the nand gates up. ALU, etc, all built from scratch. Wrote the assembler, then wrote a compiler for a lightweight object oriented language. Built the OS, network stack, etc. At the end of the day I had a really neat, absolutely useless computer. The knowledge was what I wanted, not a usable computer.

Building something actually useful, and modern takes so much more work. I could never even make a dent in the hour, max, I have a day outside of work and family. Plus, I worked in technology for 25 years, ended as director of engineering before fully leaving tech behind and taking a leadership position.

I've done so much tech work. I'm ready to spend my down time in nature, and watching birds, and skiing.

[–] [email protected] 6 points 9 months ago

Some suggestions, either online or local;

Bookclubs
Walking groups
Chess, board games, table top
Theater groups (meetup groups to go to the theater as a group)
Escape room group meetups.

Depending on if you are in a city or a smaller town the locals options will vary. I'd look at meetups site and browse local activities. For most any activity you will find a range of ages, but some will skew more one way than another.

Best of luck!

[–] [email protected] 11 points 9 months ago (1 children)

"Terminally online."

[–] [email protected] 16 points 9 months ago (1 children)

Where I live they are mostly used in school zones and residential areas, and they only trigger when going 12+ miles over the limit. Seems pretty reasonable.

[–] [email protected] 4 points 9 months ago (1 children)

I'm sure it varies by area.

Where I live they install speed cameras in residential areas, school zones, and bus routes. They also only trigger when you are going 12 or more over the limit, and the highest speed limit I've seen with one these was 45mph, 35mph during school times. They also have an officer review and sign the citation, it is a flat fee, and no points. If needed, the officer who reviews will testify in court.

If someone is going 12+ over on school zones, school bus routes, and residential neighborhoods, then they deserve their fine.

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