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Topic: OT: Tech Nerd Thread

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MikeDeTiger

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Re: OT: Tech Nerd Thread
« Reply #462 on: Today at 10:13:43 AM »
Now, if you're finding that old antennas work better than new ones, what might be true, is that the newer ones are made cheaper and are of generally lower quality.  I don't really follow the TV antenna market so I can't comment on that.

The one I have from probably about 2005, has always worked well at tailgate parties, and here at my house.

Well, the old ones certainly don't work better now :)

Just noting that while the old rabbit ears could be fuzzy at times, they picked up all the channels, for example, from Austin, down in San Marcos.  

The digital ones I've owned were basically rectangular flat surfaces, propped up by an inserted stand, kind of like a picture frame.  Very different design than the rabbit ears I used to have.  Definitely had more success in SM getting Austin channels (though far from "good") than I had here getting Beaumont channels.  

FearlessF

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Re: OT: Tech Nerd Thread
« Reply #463 on: Today at 10:13:48 AM »
I'm about 20 miles away from the towers but I'm on a hill
works well, most of the time
cheap model from Amazon
"Courage; Generosity; Fairness; Honor; In these are the true awards of manly sport."

FearlessF

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Re: OT: Tech Nerd Thread
« Reply #464 on: Today at 10:18:13 AM »
hah, back in the 1990s I bought a long range directional antenna, put an electric rotor on it, and would point it at Omaha about 90 miles away to pick up husker games that weren't aired in my market
"Courage; Generosity; Fairness; Honor; In these are the true awards of manly sport."

utee94

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Re: OT: Tech Nerd Thread
« Reply #465 on: Today at 10:32:45 AM »
It's becoming a thing these days, for people to go back to using those large aerial antennas that sit up over the house.  I think it's awesome.



betarhoalphadelta

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Re: OT: Tech Nerd Thread
« Reply #466 on: Today at 10:35:15 AM »
It's becoming a thing these days, for people to go back to using those large aerial antennas that sit up over the house.  I think it's awesome.



Mine wasn't quite that fancy, but it didn't need to be at only 60 miles from the towers. 



Riffraft

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Re: OT: Tech Nerd Thread
« Reply #467 on: Today at 10:49:01 AM »
The problem with over the air is you have to watch commercials.  The only thing I watch live is Sports and CNBC while the market is open

MikeDeTiger

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Re: OT: Tech Nerd Thread
« Reply #468 on: Today at 10:49:39 AM »
It's becoming a thing these days, for people to go back to using those large aerial antennas that sit up over the house.  I think it's awesome.




My grandma's house has one that looks exactly like that.  

MikeDeTiger

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Re: OT: Tech Nerd Thread
« Reply #469 on: Today at 10:51:39 AM »
If I did have something like that, I'd probably just cut on Sling Orange during football season and be done with it.  I think Sling Orange is still a pretty decent price.  YTTV and Hulu Live TV have both really climbed in the last 5-7 years, as I expected they would.

MikeDeTiger

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Re: OT: Tech Nerd Thread
« Reply #470 on: Today at 02:14:24 PM »
Light day at work, so I'm trying to learn about the difference between passwords (as applies to accounts with websites) and passkeys, which I've only just started hearing about. 

At the moment, I still don't get it. 

I understand the basic concept I've seen explained so far, but it doesn't do anything to help me understand how it's any better than passwords.  If a website is hacked or inappropriately accessed, if they have your public key, which is compared to a lock, I don't see how they can't reverse engineer your private key, which is compared to a key for the lock. 

Something about one-way math, which I've never heard of, cryptography, which I know nothing about, and I'm also starting to think that maybe the key/lock example is just a bad one, because the analogy fails exactly where a proponent wouldn't want it to, i.e., that hacking the public key doesn't lead to reverse engineering your private key, which any decent machinist could do with access to the lock.

Anyway, I'm not much wiser about it than before I started reading about it. 

Drew4UTk

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Re: OT: Tech Nerd Thread
« Reply #471 on: Today at 04:24:06 PM »
this is my understanding of it all... take it for what it's worth: 

it's a bit of a slight of hand... public would indeed be described as a lock, and private would be a key in the same analogy.  the slight of hand is the agreement... basically, you tell the secure source what question to ask you and that question doesn't have to be stored securely... you also tell it what the password/key is... the secure source didn't generate the question nor the passcode... you did... or, in the case most often, a device such as a smart phone, bluetooth, or RFID device did- and they can generate "questions" a mile long that require answers equally long but which can be parsed in the blink of an eye by the devices.  all that happens when using a smart device without requiring user input...  to further enhance, the public (the lock; the public key) can be accompanied by a script injected by the private key that informs the lock the combination has changed for the next challenge and will require XXX for the next iteration both in question and response.... akin to how blutooth pairs... it establishes a frequency to communicate on and injects a algorithm about which frequency to hop to next- once the devices are paired, they begin bouncing frequencies rapidly and in unison... a blip may be distinguishable to a listener/eavesdropper, but that is all- and you have no clue what the next frequency will be to intercept the next blip... the public/private keys can do the same thing, changing every time access is requested based on an agreement arranged in the answer/private key.... 

then, there is challenge and persistent... challenge asks you once or maybe once and then at an event what your password is... persistent asks you every time you lift a foot off the ground and before you plop it back down.  you could see where that would be a problem for user experience.  it comes down to 'just how secure you want this to be?".     

my questions are "how much does this matter?" as with quantum computing, these measures are things of the past.  sha-256? it takes a quantum computer less than a millisecond to crack it wide open.  if there are no keys? it'll find a crease in the application or network in the same amount of time.  I watched a podcast a few weeks ago and the guy said "it's not coming; it' here".  the defense right now is we know where the quantum computers are and who's operating them.  if a hack happens that is inexplicable any other way, we'll just look to see what computers were doing what when it occurred.  my question is relevant because, at some point, there are going to be a lot of quantum computers around running various AI systems and singularity will be just up the street, and all of that means our ideas of security are tossed. 

MikeDeTiger

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Re: OT: Tech Nerd Thread
« Reply #472 on: Today at 04:49:40 PM »
well......furk.  

Drew4UTk

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Re: OT: Tech Nerd Thread
« Reply #473 on: Today at 05:50:46 PM »

https://www.instagram.com/p/DOwTWpODuwW/


maybe a better way:  "Hey you, I'm me"... "yeah? Prove it..." ... "Okay, ask me anything".   [and it goes looking for questions only you or your connecting device, would know the answer to, and asks it.]  The public non encrypted key is the challenge- anyone sniffing can see it... the private key is the response - the answer is either right or wrong, but destroyed nonetheless after use.  there is no 'real' answer and it certainly isn't a static password.  

if you unlock a network or a door with NFP or RFID, you're doing the same thing except the response is static. the question or the answer isn't static with passkeys.  there is nothing to sniff out via router intercept, collect, and try to use later as that key no longer works. 

again, this is my understanding... i've been staring at it for a while as a tool on this very server, but don't know how to implement it.  i'm hoping someone else finds success, works the bugs out, and makes a plugin i can just load up and use. 

betarhoalphadelta

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Re: OT: Tech Nerd Thread
« Reply #474 on: Today at 06:06:13 PM »
My concern... Seems like passkeys are tied to a device--often a computer or cell phone. Which means that if that device fails, you're in trouble?

Other than that, I like the concept. 

BTW the description by "javajunkie" at this link seemed like a pretty damn good explanation of what they are, and why they're more secure than passwords: https://www.reddit.com/r/explainlikeimfive/comments/1fwl84z/eli5_what_is_a_passkey_and_how_does_it_differ/

 

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