Live data from Hacker News

Apple Introduces AirTag

apple.com

341–350 of 966 posts

Re: Apple Introduces AirTag

#341
post #306

Earlier quoted context omitted.

How many of these third party devices can use every iPhone, iPad and more in the world as a beacon?

Tile uses everyone with the tile app installed. It's not the same by sheer numbers, but it's more than enough that if someone slips a tile tracker on you they will know where you're at. Or, if someone wants to spend a bit more money, not even much more, they can buy a full GPS tracker that doesn't need anything to report on it. Apple isn't coming out with some groundbreaking spy tech here, this is very routine stuff…

not to mention tile does it without notifying iphones of airtags or the beep when moved.

Re: Apple Introduces AirTag

#343
post #69
post #37

In a week you’ll see wrist bands or underwear with a slot to insert these and paranoid parents will buy them by the thousands. Ditto for jealous spouses (secret tracer in the trunk anyone?).

No they won’t - read the article. Numerous protections against it being used as a “secret tracer”

It's such a powerful tracking device that it has to be nerfed to be sold.

Because too many people's first thought is to stalk\track people secretly.

Technology isn't the problem, people are!

Re: Apple Introduces AirTag

#344
post #326

Can somebody please help me parse the last sentence in the "Privacy" paragraph here? I'm honestly confused by the "or location of any device that helped find it". All I want to know is if a LEA could subpoena Apple for the location of any/all of my AirTags, and I can't tell if this is talking about the tags themselves or about the device that initiates a Find action for a Tag: "AirTag is designed from the ground up t…

https://arxiv.org/pdf/2103.02282.pdf, see 6.1: "The BLE advertisements sent out by a lost device contain an EC public key pi. A finder device that receives such an advertisement determinesits current location and encrypts the location with pi.

Re: Apple Introduces AirTag

#345
post #135

Earlier quoted context omitted.

how long is the suffix? I can't see it being effective for both anti-stalking (ie. someone placing a tag on you without your consent) and anti-tracking (ie. shops/malls using your tag to follow you around).

I don't know the answer to that, but thinking about it generally: If the suffix was just a single hex digit, it would work to detect a persistent tag. After, say 5 key rotations, if the last digit is still "E", then it's highly likely that the tag that's constantly in range is the same physical thing. Meanwhile, if you're trying to use these things to track visitors to your store, you're only getting 16 bins of peopl…

Unfortunately, the spec is currently only available to partners in the MFi program. That is probably where parameters like the one you are asking about are defined: https://developer.apple.com/find-my/. I’m sure there will be a paper published that reverse engineers the spec once these devices are out in the wild.

The protocol is in Ivan Kristic’s Black Hat 2019 talk: https://i.blackhat.com/USA-19/Thursday/us-19-Krstic-Behind-T...

Finally, the static part of the broadcast doesn’t need to be permanently static. It simply needs to rotate at a period that’s longer than the rest of the public key.

Re: Apple Introduces AirTag

#346
> provides a private and secure way to easily locate the items that matter most

I am sorry but I couldn't stop laughing. How exactly is this private and secure? Only you know and a trillion dollar company :-)

I would buy something like this if I could self host the server and it could operate on virtual LAN. But letting foreign company with questionable ethics know where is the stuff that I love?

Re: Apple Introduces AirTag

#347

Earlier quoted context omitted.

As pointed out above, this is already the status quo (replacable battery, 1 year life, etc). Tile has had it for years. I'm curious if it would've been technically feasible to have wireless charging on these instead of replaceable battery. Or would that greatly increase the price?

To be fair, replaceable batteries in laptops and phones also used to be the status quo and Apple successfully changed that. Just because it’s the status quo wouldn’t prevent Apple from “thinking different”.

They are replaceable just not user replaceable though user's can change it if they buy $10 worth of tools. Just like my car's battery isn't user replaceable unless i buy tools to be able pull the battery out of the battery compartment.

Re: Apple Introduces AirTag

#348
"The Find My network is approaching a billion Apple devices and can detect Bluetooth signals from a lost AirTag and relay the location back to its owner, all in the background, anonymously and privately." Is a feature like this already in use?

Re: Apple Introduces AirTag

#349

I thought one of the big use cases for this was to track stolen items, like a backpack or maybe even a bicycle. But the "anti-stalking" feature will notify someone if an AirTag they don't own appears to be traveling with them. Does this render it useless for anti-theft, then? Since it will just notify a thief that the bike they just stole is being tracked, and they can look for the AirTag and throw it in the nearest…

This is a good question. I wonder what the period of time is required before it notifies you about potential stalking. If it is more time than would typically take for someone to realize that the item is stolen, then perhaps it’s not such a big deal. But if it’s only 30 minutes or so, a thief could be notified that they’ve stolen a bicycle that’s being tracked before you come out of the grocery store, movie theater,…

[deleted]

Re: Apple Introduces AirTag

#350

Earlier quoted context omitted.

It doesn't use any battery life compared to turning the screen on.

But do you leave your phone's screen turned on 24x7? I buy that there are more expensive things you can do with your phone, but even if turning off Bluetooth is only giving you back a small percentage of your total battery usage, that might genuinely be noticeable on an older device with an older battery.

I would say it's doubtful it even uses 1% of it. You can use low battery mode to more intentionally extend it.
Post reply on HN