1934: "Phone Security"

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richP
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1934: "Phone Security"

Postby richP » Wed Dec 27, 2017 3:31 pm UTC

Image
Title text: ...wait until they type in payment information, then use it to order yourself a replacement phone.

Need to add an option to reverse left-swipe and right-swipe on dating apps.

(to mods: sorry if I missed anything, I don't usually firstpost)

speising
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Re: 1934: "Phone Security"

Postby speising » Wed Dec 27, 2017 3:52 pm UTC

does anyone think randalls phone was stolen recently?

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pkcommando
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Re: 1934: "Phone Security"

Postby pkcommando » Wed Dec 27, 2017 3:54 pm UTC

Additional Features:
Any non-social-media web use will automatically redirect to one of three randomly chosen types of websites -
A)Nuclear Secrets
B)Alt-right
C)Child Porn


Too much... too cruel...?
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jozwa
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Re: 1934: "Phone Security"

Postby jozwa » Wed Dec 27, 2017 4:00 pm UTC

speising wrote:does anyone think randalls phone was stolen recently?

Maybe he upgraded his phone and was checking out the security options and it got his imagination going.

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Soupspoon
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Re: 1934: "Phone Security"

Postby Soupspoon » Wed Dec 27, 2017 4:52 pm UTC

The car should inexorably drive at a constant 5mph. You can run, but you can't hide, and you can't ever settle down anywhere for more than 100 days at a time.

(Get used to living on planes, trains and automobiles. Find out which have the best sleeper facilities…)

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cellocgw
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Re: 1934: "Phone Security"

Postby cellocgw » Wed Dec 27, 2017 6:27 pm UTC

Soupspoon wrote:The car should inexorably drive at a constant 5mph. You can run, but you can't hide, and you can't ever settle down anywhere for more than 100 days at a time.

(Get used to living on planes, trains and automobiles. Find out which have the best sleeper facilities…)


Guess the car must be a ...
wait for it...

Plymouth Fury
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gimmespamnow
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Re: 1934: "Phone Security"

Postby gimmespamnow » Wed Dec 27, 2017 7:12 pm UTC

So normally when you google xkcd the preview text is the comic from today or yesterday. Today the preview text is, special...
"xkcd: Phone Security
https://xkcd.com/

xkcd.com is best viewed with Netscape Navigator 4.0 or below on a Pentium 3±1 emulated in Javascript on an Apple IIGS at a screen resolution of 1024x1. Please enable your ad blockers, disable high-heat drying, and remove your device from Airplane Mode and set it to Boat Mode. For security reasons, please leave caps ..."

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Reka
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Re: 1934: "Phone Security"

Postby Reka » Wed Dec 27, 2017 7:39 pm UTC

gimmespamnow wrote:So normally when you google xkcd the preview text is the comic from today or yesterday. Today the preview text is, special...
...xkcd.com is best viewed with Netscape Navigator 4.0 or below...

I believe that text is always there if you view the source. Whether it shows up in Google's preview depends on a bunch of things that I don't have the expertise to explain.

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Steve the Pocket
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Re: 1934: "Phone Security"

Postby Steve the Pocket » Wed Dec 27, 2017 7:41 pm UTC

On the subject of security countermeasures on electronics, let me float this one by you:

A PCI card for desktop computers that contains an EMP device and a GPS receiver. Within about ten seconds of powering on, it checks the current location, and if it's more than five miles in any direction from its home, it activates the EMP, frying all the circuits and wiping the hard drive. The only way to prevent this is by opening the case and holding down a button on the card when powering on. This overwrites the "home location" as well.

The main caveats I can think of are (A) constructing a homemade EMP might be illegal, and (B) it almost definitely would require more power than a typical power supply can put out, let alone provide from one eight-pin connector.
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Baige.

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cellocgw
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Re: 1934: "Phone Security"

Postby cellocgw » Wed Dec 27, 2017 8:10 pm UTC

Steve the Pocket wrote:On the subject of security countermeasures on electronics, let me float this one by you:

A PCI card for desktop computers that contains an EMP device and a GPS receiver. Within about ten seconds of powering on, it checks the current location, and if it's more than five miles in any direction from its home, it activates the EMP, frying all the circuits and wiping the hard drive. The only way to prevent this is by opening the case and holding down a button on the card when powering on. This overwrites the "home location" as well.

The main caveats I can think of are (A) constructing a homemade EMP might be illegal, and (B) it almost definitely would require more power than a typical power supply can put out, let alone provide from one eight-pin connector.


I can save you some trouble -- there are OEM boards out there with self-destruct stuff built in, easily programmable to go off under whatever circumstances you desire. They're mostly sold to the Pentagon and various TLAs.
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moody7277
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Re: 1934: "Phone Security"

Postby moody7277 » Wed Dec 27, 2017 9:23 pm UTC

Reka wrote:
gimmespamnow wrote:So normally when you google xkcd the preview text is the comic from today or yesterday. Today the preview text is, special...
...xkcd.com is best viewed with Netscape Navigator 4.0 or below...

I believe that text is always there if you view the source. Whether it shows up in Google's preview depends on a bunch of things that I don't have the expertise to explain.


Looks like that is on the page where the "the algorithm regularly find Jesus" stuff used to be.

cellocgw wrote:Plymouth Fury


Is that the mythological reference or the Stephen King reference?
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Soupspoon
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Re: 1934: "Phone Security"

Postby Soupspoon » Wed Dec 27, 2017 9:45 pm UTC

Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal, and (B) it almost definitely would require more power than a typical power supply can put out, let alone provide from one eight-pin connector.

(C) the not uncommon (enough) GPS glitch where you can get a blip in the position that temporarily locates you maybe a hundred miles from where you actually legitimately are. :P

SuicideJunkie
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Re: 1934: "Phone Security"

Postby SuicideJunkie » Wed Dec 27, 2017 11:42 pm UTC

Soupspoon wrote:(C) the not uncommon (enough) GPS glitch where you can get a blip in the position that temporarily locates you maybe a hundred miles from where you actually legitimately are. :P

While debouncing the readings and retrying the location, the device will draw and store an extra 120 watts from the power supply.
An hour later, the detonate option triggers.

I wouldn't recommend it, but the number of retries can be reduced in the advanced options panel if you're willing to settle for less than a ton of TNT equivalent.

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GlassHouses
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Re: 1934: "Phone Security"

Postby GlassHouses » Thu Dec 28, 2017 1:55 am UTC

Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal

How do you even create an EMP, other than by detonating a nuclear bomb?

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Peaceful Whale
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Re: 1934: "Phone Security"

Postby Peaceful Whale » Thu Dec 28, 2017 2:04 am UTC

Idk, they had one in an avengers movie...

So, if anyone knows how to build one, please leave me detailed instructions. I’ll use it for completely scientific endeavors! Trust me!
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Heimhenge
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Re: 1934: "Phone Security"

Postby Heimhenge » Thu Dec 28, 2017 2:51 am UTC

GlassHouses wrote:
Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal

How do you even create an EMP, other than by detonating a nuclear bomb?


Huge capacitor discharged through an inductor. Very directional but effective. Was going to build one to take out large sub-woofers in cars I encounter in traffic. Got busy with another project ...

sotanaht
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Re: 1934: "Phone Security"

Postby sotanaht » Thu Dec 28, 2017 6:26 am UTC

GlassHouses wrote:
Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal

How do you even create an EMP, other than by detonating a nuclear bomb?

Some quick googling suggests an explosive charge wrapped in an electromagnetic coil. It seems the explosion disrupts the magnetic field in such a way as to generate a small but usable EMP. I have no idea how one would be made without explosives though, like the guy above me says only a capacitor.

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Re: 1934: "Phone Security"

Postby somitomi » Thu Dec 28, 2017 7:51 am UTC

Soupspoon wrote:
Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal, and (B) it almost definitely would require more power than a typical power supply can put out, let alone provide from one eight-pin connector.

(C) the not uncommon (enough) GPS glitch where you can get a blip in the position that temporarily locates you maybe a hundred miles from where you actually legitimately are. :P

(D) Every GPS-based device I've seen needed about one to five minutes from startup to find its location. In the intervening time they usually "guess" you might be at the location the device was last turned off.
(E) The existence of GPS-spoofing means now you have a "kill computer" option available wirelessly to anyone (who knows about this security measure).
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rmsgrey
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Re: 1934: "Phone Security"

Postby rmsgrey » Thu Dec 28, 2017 4:24 pm UTC

sotanaht wrote:
GlassHouses wrote:
Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal

How do you even create an EMP, other than by detonating a nuclear bomb?

Some quick googling suggests an explosive charge wrapped in an electromagnetic coil. It seems the explosion disrupts the magnetic field in such a way as to generate a small but usable EMP. I have no idea how one would be made without explosives though, like the guy above me says only a capacitor.


Large enough spark will do it - EMP from lightning strikes kills consumer electronics fairly effectively in a modest region.

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Re: 1934: "Phone Security"

Postby gimmespamnow » Thu Dec 28, 2017 8:44 pm UTC

somitomi wrote:
Soupspoon wrote:
Steve the Pocket wrote:The main caveats I can think of are (A) constructing a homemade EMP might be illegal, and (B) it almost definitely would require more power than a typical power supply can put out, let alone provide from one eight-pin connector.

(C) the not uncommon (enough) GPS glitch where you can get a blip in the position that temporarily locates you maybe a hundred miles from where you actually legitimately are. :P

(D) Every GPS-based device I've seen needed about one to five minutes from startup to find its location. In the intervening time they usually "guess" you might be at the location the device was last turned off.
(E) The existence of GPS-spoofing means now you have a "kill computer" option available wirelessly to anyone (who knows about this security measure).

(D.2) GPS by itself takes 12.5 minutes if it hasn't had a signal in 30 days, it is only less if it had a signal more recently. A cell phone has more information than just the GPS itself, (it can look at radio strength from cell towers/WiFi networks and get a location that way, and it also has a network connection to download the info that it was going to download from the satellites,) so it can get a rough position right away, and get a GPS position faster than a normal GPS can.
(F) GPS doesn't work in a lot of buildings. It works fine in wood framed houses, but interior offices in most office buildings don't have GPS coverage, and this is especially true for large concrete buildings like the Pentagon, or in basements (where a lot of server rooms are located.) If you are worried some random thief is going to steal your computer from your house and take it to their house, this system works great. If you are worried that some spy is going to steal a military computer from your secure bunker and take it to their secure bunker before they turn it on/try to hack into it, the computer won't know that that has happened...

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PinkShinyRose
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Re: 1934: "Phone Security"

Postby PinkShinyRose » Fri Dec 29, 2017 3:14 am UTC

gimmespamnow wrote:If you are worried some random thief is going to steal your computer from your house and take it to their house, this system works great.

Even then it only works assuming they live in a wooden house. If they live in a brick/stone/ concrete/metal house or an apartment it won't work consistently (except maybe on the top floor; in my experience the only effective method of getting a proper GPS signal is to go outside, but I must admit to not having a lot of experience with wooden housing).

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GlassHouses
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Re: 1934: "Phone Security"

Postby GlassHouses » Fri Dec 29, 2017 3:17 am UTC

gimmespamnow wrote:(D.2) GPS by itself takes 12.5 minutes if it hasn't had a signal in 30 days, it is only less if it had a signal more recently.

Since when? I've used TomTom navigation devices that had no connectivity whatsoever except for the GPS receiver. You updated maps over a USB link from a PC, if indeed you ever bothered to do so (it's not like road systems change a lot in first-world countries with stable populations). I never saw them take more than a minute to get a first accurate fix, even after long periods of non-use.

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Re: 1934: "Phone Security"

Postby Soupspoon » Fri Dec 29, 2017 4:34 am UTC

There's hot-start and cold-start modes (with a warm-start mode between).

The 'almanac' (heavens data, effectively, rather than map data which is basically just furniture awaiting a relative position) is cyclically repeated over a 12.5 minute cycle so that a device that does not have this data current to about half a year may have to await any (if any) new satellite information to trickle its way into the working memory.

If the GPS device can be continually active (with its own independent power, just like the Mobo's RTC) then it can probably keep itself "hot", or at least not be too surprised by an update of the necessary satellite ephemeris (broadcast every half minute, from every satellite), and even keep abreast of the 'warm' standby bugbear of moving >55mph for >60 miles, between fixes, that is capable of invalidating the expected Time To Subsequent Fix.

More resilient (multi-channelling, always-(somewhat-)on) GPS receivers exist, and maybe the cigarette-lighter-powered dashboard types do (some of) this warmer-standby stuff even when 'off'. A USB-plugin GPS module of my acquaintance (I just recently dug it up, for a new future project) definitely does not. My tablet GPSs (somewhat handicapped by my refusal to let them try to connect to the mobile network for alleged 'improved accuracy', which it will not be, just more rapid almanac/ephemeris data) lies between. Or maybe I just have a more realistic impression of when the standby is being retained (and battery power being used in the dedicated electronics), compared with the sneaky behaviour of your average TomTom.


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