krellor

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

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.

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.

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.

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.

I gave my kid a BB gun, but it stays in a safe. I also gave my son a pocket knife for camping that stays in my night stand unless we are camping.

You can give something to a kid without letting them have unsupervised access. I gave my kids steam decks, but limit their screen time.

I agree the original comment lacked specificity. You could gift a gun in a responsible or irresponsible way, and I’ve seen both.

Edit: and the comment about gifting a rifle also mentioned that in their personal situation they had to have a parent to use it.

There’s a huge difference between giving a child unrestricted access to a firearm, and taking them sport shooting in a controlled environment. I’ve helped with beginner shooting courses for kids in scouts. There is an adult with each kid, one round loaded at a time, etc. You can similarly control the environment hunting by using blinds, etc, where you oversee the use of the firearm, loading of round etc.

I’m not big into shooting, but from a safety perspective there are ways to hunt and sport shoot with kids in a very controlled way.

I need to start using old batteries in my bathroom scale.

Minimum wage is an absolute measure: a fixed amount not pegged to inflation. Taxes are a percentage, a relative value that adapts to inflation.

I’m all for a relative measure for the minimum wage.

Also, in this scenario the people would be left with $1,620,000 after selling their house, which hardly leaves them without options. I get that they want to stay in that same neighborhood. But the problem they are facing is an enviable one for many less fortunate people.

Yeah. I’m not hating on these people, but they would have $1.4 million in taxable income, and 37% would be owed as taxes, leading them around 900k. If they planned it over a few years they could actually avoid some of that.

So I don’t know their situation, but walking away with $882k doesn’t leave you without options.

Edit: I forgot that you only pay the normal income rate on assets held for a short period, so they would have $1,620,000 after taxes.

The crime stats and stories in this case are so bad they’d be comical if it didn’t represent desperate people.

Since 2019, police have logged 1,335 incidents in the vicinity of the restaurant on Oakport Street — more than any other location in Oakland, the newspaper reported.

That number includes nine robberies, two commercial burglaries, four domestic violence incidents and 1,174 car break-ins, according to Oakland police data shared with the Chronicle.

I saw elsewhere that a guy got robbed there, came back to do a news interview, and got robbed again. The crime stats mean basically a crime a day at that location.

In that context it reads like the bill is more intended to shield people from charges who end up in altercations after telling people to leave.

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.

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.

Thanks for the article, it was a fun read. I’ll have to go back and re-read the majority opinion because I do remember some interesting analysis on it even if I disagree with the outcome.

My Costco photo is 20 years old and looks nothing like me anymore, but when I asked for a new photo they said no. So obviously they aren’t looking closely at pictures.

While not related from a legal standpoint, the use of iPhones and intermediate devices reminds me of a supreme Court case that I wrote a brief about. The crux of it was a steaming service that operated large arrays of micro antenna to pick up over the air content and offer it as streaming services to customers. They uniquely associated individual customers with streams from individual antenna so they could argue that they were not copying the material but merely transmitting it.

I forget the details, but ultimately I believe they lost. It was an interesting case.

That makes sense, I honestly wasn’t thinking in terms of the comment on the meme. Thanks for the clarification and have a great day!

I’ll give you some general advice and am happy to answer any follow up questions you might have.

Upfront, I recommend getting a laptop from a well known vendor running Windows. If you aren’t looking to go on a technology learning expedition, just need something that will work, and will have a warranty and a support line if things go wrong, you can’t beat a vendor. Dell is probably where I would look, but Microsoft surface, and Thinkpad’s are also good.

Going with Windows from a vendor supplied laptop will maximize the amount of support you have and the number of things that just work.

If you are looking for more of a technology project, I’d need to know more about what your tolerance is for fiddling with technology or your computer not working.

As for CAD, as others said, check the recommended software specs and match your computer to them. Make sure you give yourself plenty of fast storage like m.2.

For browsers, I use Firefox. I’d recommend Firefox as being a good balance between privacy and just working with plugin support. But chrome and other chromium based browsers like edge also just work.

Consider getting a Microsoft 365 personal or family account. For $100/year you get cloud storage, computer backups, and the local and online office suite, and it all integrates well into Windows.

If any of the above assumptions are wrong, I’m happy to update recommendations.

Finally, how do you learn to fish? It takes time to come up to speed on things, so slowly learning, finding neutral review sites like maybe Tom’s hardware, and doing your own testing.

Lots of people will give you opinionated advice, so don’t be afraid to be skeptical. Think about what’s important to you, whether that be just working, or privacy, or availability of support materials.

I don’t know that I follow your illustration, but let me try an alternate explanation for my point.

One way pi appears is by taking the perimeter of the great pyramid and dividing by its height to get 2Pi. We can write this as

4L/h ~= 2Pi
2L/Pi ~= h

The great pyramid has a height of 280 cubits, and a base of 440. From this, using right triangles and Pythagorean identities we can find the long side and all angles.

Specifically, we look at the slope of the outer face, which we can express as rise over run. In our case, 280/220 = 1.27 or as 51.843 degrees.

As long as that ratio of rise over run holds you will preserve the above ratio with pi. You can fix that slope and vary either the base or the height, and the other value is predetermined. So how did the rise and run ratio come up? Not every pyramid had this relationship, and there is an infinite number of unit length combinations that wouldn’t give rise to this ratio.

So let’s look at the old units, in particular, the palm.

1 palm = 4 digits.
4 palms = 16 digits.
5 palms = 20 digits.

If for every 5 palms up, the block is 4 palms deep, you get the ratio of 1.25.

That gets us within the 4% agreement with our starting ratio.

Again, you could choose a unit length, and have the rise be 3 up for every 2 palms deep, and you now wouldn’t have this ratio. There are an infinite number of ways to construct a pyramid with a unit measure that doesn’t.

I hope that makes sense. Have a good day.