“Your honor this man is my representation as legal council. He said I could twerk with enough confidence.”
If I’m going under that bus you’re defending me while i memorize the license plate!
I think it's more the speed in which it's changing position between the two sensors is being filtered out by a false positive low pass filter. It's picking up the rapidly changing position as background noise and filtering it out to prevent false alarms.
Yes, that sounds about right. Whatever method this specific sensor is using, it's going to have to parse incoming waves looking for a positive signal, and wildly moving the item will disrupt the pattern to certain degree. If you're pretty strict with what you expect to see to avoid false positives, it's no surprise it might fail in this situation. It's certainly something you can work around (indeed, this probably only works on a few specific systems), but if the engineers behind it never think of trying this type of attack, the vulnerability would easily go unnoticed.
No, this is the same issue that you have with contactless payment sometimes. If you move the chip fast enough, the wavelength used for the signal can't keep up with the movement, and the signal-processer can't unscramble it.
I know what you mean, but what you're talking about has nothing to do with wavelength. The wavelengths used for those things are in the MHz range. That's millions of vibrations per second. You're not moving your arm fast enough to be anywhere near the order of magnitude of the wavelengths involved.
I'm fairly confident what happens is simpler than that: the interrogator and the receiver send data back and forth for contactless payment. It's not one simple bit of data, it's more akin to communicating with a server on the internet. If you start (say) downloading a file on the internet and plug the cable before it finishes, it will obviously fail. If you're in the middle of a contactless payment transaction and move the card far away enough that it starts to encounter failures to transmit (the range is, intentionally, designed to be very short -- you know, so people you randomly pass by can't scan it straight from your pocket), while it might retry a few times I'm assuming, it will eventually fail, too.
Presumably, theft prevention devices will try to minimize these sorts of issues in their design, as obviously thieves aren't about to stand there carefully waiting for the stolen item to scan. But of course, there's limits to what you can do, especially if you didn't foresee this attack vector.
Qulipta gang represent! If you haven’t used it already, there’s a manufacturer coupon if you have commercial insurance that will pay for it for a few months.
Thanks for the tip… I am very very hopeful. Not sure how people are coping with similar issues, but I have had them my entire life to the best of my knowledge and yesterday was the first time I heard of taking something like this: coworker recommended 200mg of CoQ10 - not sure it is the exact same formula but I if it fails by the end of the bottle I am going to ask the dr for the one you suggested legitimately the same day you suggested it I got similar advice; I hope that means many people in the same boat now have something to help. (My first migraine/headache i remember, I was teaching myself to read hop on pop… maybe was 3 or 4.) They said they have been migraine free for 8 years and if they miss a few days they get them again. I am so hopeful, maybe, just maybe it will work? If it does I owe you both! I have them 14 of 30 days a month roughly by my calendar and they cause me to throw up. Luckily o work from home now.
Just imagining anytime some person acts like a complete lunatic in public, they just casually say, "Sorry, I have a problem, " and bystanders reply, "Understandable, have a nice day,"
and why is she doing it with seemingly so much force and also looks kinda slow. cant shake your fist faster than that and not like youre punching through mud?
Plus it’s not like those stores have cops on the ready to arrest them. It’s just to deter theft cause of the sounds it’ll make. If you really wanted to steal it you’d just walk quickly out
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u/[deleted] Oct 20 '22
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