Live data from Hacker News

Why do they still make car alarms? (2015)

popularmechanics.com

161–170 of 535 posts

Re: Why do they still make car alarms? (2015)

#161

I have an older RV that people sometimes try to steal (it's usually meth heads wanting to live on it; I've taken to leaving a plaque on the dash saying that if they want a hot meal instead, just knock on my door). The alarm is aftermarket, and silent. All it does is make the fuel pump go in reverse. (The fuel pump is also aftermarket) It's been hilarious a couple times.

That can end up pulling air through the fuel pump. That isn't safe or healthy for the pump.

Re: Why do they still make car alarms? (2015)

#162

Earlier quoted context omitted.

I don't get what people are stealing from parked cars? You can't remove radios anymore. What are they taking? Surely nobody's leaving a laptop or a purse in a car?

They will not hesitate in San Francisco to break a $300 window to steal the change out of your ashtray.

That's just a figment of local law enforcement policy and doesn't really speak to broader trends. Places like Boston and DC have car break ins but they're not rampant like in SF

Edit:

For those unaware SF downgraded a ton of (formerly felony I believe) property crime to low level misdemeanors with very light sentencing guidelines (termed "catch and release" by many) which results in nearly zero law enforcement action being taken against them . The result of this is that all sorts of petty theft and theft adjacent behavior (like breaking into cars) is far more rampant than in many other cities because (obviously).

I support treating petty property crime as petty but you can't accidentally allow "crime with a victim" type crime to go unenforced in the process. Victimizing other people can't be an activity that has positive ROI in the long term.

Re: Why do they still make car alarms? (2015)

#163

I have an older RV that people sometimes try to steal (it's usually meth heads wanting to live on it; I've taken to leaving a plaque on the dash saying that if they want a hot meal instead, just knock on my door). The alarm is aftermarket, and silent. All it does is make the fuel pump go in reverse. (The fuel pump is also aftermarket) It's been hilarious a couple times.

> The alarm is aftermarket, and silent. All it does is make the fuel pump go in reverse. Would you mind disclosing what brand/model this alarm is? This would be great for a couple of “issues” I’ve been having. If you aren’t comfortable saying publicly, could you send me a message with the info? And Amazon/Aliexpress/eBay link?

If it's a DC pump the alarm probably just turns on a relay that swaps the input polarity of the motor.

Re: Why do they still make car alarms? (2015)

#164

Earlier quoted context omitted.

Right. The alarm makes them only target the easily available junk that is in plain view. With no alarm, the thief could quietly spend 30 minutes "working on" the vehicle so they could clear out your trunk, and maybe even a few parts like the radio/GPS

AFAIK, people don't really steal stock radios anymore. Or at least, it's not very common. Your trunk should also be empty of anything valuable. There's no reason to keep much back there overnight. I guess thieves could steal my tire chains and donut right now, but that hardly seems worth the trouble.

Jokes on any thief that tries to steal from my trunk. I don't really care about any of the junk in there other than maybe my jumper cables and tool set. Have fun sorting through all of the extra stuff to find them in time

Re: Why do they still make car alarms? (2015)

#165
post #24

Earlier quoted context omitted.

You’re in a public place, have no reasonable expectation to privacy, and the recording is not intrusive, so perfectly legal.

At least in Spain* it does not work like that, there are very stringent limitations on what you can record on the street, e.g. through dashcams or tesla sentinel mode: https://www.aepd.es/sites/default/files/2019-09/informe-juri... For example, you can't use dashcam recordings of an accident in trial. * And I don't want to spend a bunch of time reading law but quite sure this is very tied in with GDPR, so I'd say tha…

I don't think it's always part how GDPR is implemented in national laws. I believe it's admissable in court here in the UK, certainly my dashcam footage of a crash caused by a drink driver in 2019 was collected as evidence by police officers at the scene.

Re: Why do they still make car alarms? (2015)

#166

Earlier quoted context omitted.

Since I've lived in US cities, yes. Almost daily do I hear a car alarm. Probably just a factor of: 1. More cars around me in the city than in the small town I came from. 2. More things that can set off the alarms (loud motorcycles being a big one).

I live in Berlin in an area that has many parking cars. I rarely hear an alarm go off. Maybe 2-3 times a year, if at all. I also only know this from anglo-saxony media.

Car alarms seem very rare in some countries. On VWs used car portal in Austria out of 670 VW Passat only 22 have a car alarm. I never had a car with an alarm and never saw a reason to get one.

Re: Why do they still make car alarms? (2015)

#167

I have an older RV that people sometimes try to steal (it's usually meth heads wanting to live on it; I've taken to leaving a plaque on the dash saying that if they want a hot meal instead, just knock on my door). The alarm is aftermarket, and silent. All it does is make the fuel pump go in reverse. (The fuel pump is also aftermarket) It's been hilarious a couple times.

What happens when the fuel pump goes in reverse?

Also, anyone ever take you up on the hot meal?

Re: Why do they still make car alarms? (2015)

#168
post #128

Earlier quoted context omitted.

People in dense cities learn to deal with it one way or another. Somewhere like Manhattan, I can practically guarantee you there are going to be sirens (which are probably even louder) during a given night as well.

Boston does this better, where if there isn't traffic, sirens aren't run. At night, sirens are relatively rare. Especially compared to Seattle and Boise where I've also lived. In Germany, I only ever heard a couple sirens the whole time I lived there, and none directly on my street.

Yes, come to think of it, I have never heard sirens of emergency services drive near at night, but I have occasionally heard them during the day.

How odd. — I rather value my sleep.

Re: Why do they still make car alarms? (2015)

#169
post #122

Earlier quoted context omitted.

I sometimes wonder about the ratio of assaults, etc. the panic button has ever curtailed to the number of loud horn blares that have awoken people, distracted people to the point where they've had an accident, etc.

It's definitely a "find your car in the giant lot" button if you ask me

You can also use the unlock in my experience. But, yeah, searching for a car is my use case generally.

Re: Why do they still make car alarms? (2015)

#170
post #113

> Car theft rates have been since declining ever since, going from about 1.6 million annual incidents in the 1990s to around 800,000 in 2014. > Cars have gotten impossible to steal I’m confused how he makes this claim given his own statistic. So are all car thefts done with sophisticated hacking given the RFID tech is 25 years old? Still seems like a problem to me.

I wonder why author think that it hard to steal modern cars. This IS a billion bucks business. Car part prices are high as never. Why not some person to buy replacements from shady market?

Because the car engine won't run without a computer, the ECU, telling the spark plugs when to fire (among other things), the ECU won't do that without establishing that some cryptographically secure element is within sniffing range, and in my experience as a computer programmer over many decades it's hard enough to get a computer to do the correct thing when it's cooperating. If it actively trying to get in your way, go around it, or under it, indeed anything other than trying to persuade it to be helpful.

FYI, for well over a decade now even plain looking keys that you put in a lock and turn have some RFID thing inside of them the car authenticates against, before it will cooperate. https://www.aliexpress.com/item/32826625117.html

Still, you may have a point. It don't know what it's like in the USA, but in Australia this has lead to a corrosponding up tick in home break & enters. Since the car can't be stolen without the key by doing anything less than towing it away, they steal the keys. Regularly.

Post reply on HN