Can somebody clarify the rules on parking on pavements?

give_them_FA

I just use two tins connected with string. Not the latest technology but entirely uncrackable.

LincolnshireYokel

give_them_FA wrote: »

I just use two tins connected with string. Not the latest technology but entirely uncrackable.

The americans have laser technology that points a tight beam at a surface (like a pane of glass in an office or a taut string between two cans) and can detect the vibrations and turn them back into sound.

So no, can and two strings isnt secure!!!

give_them_FA

I don't think the Americans' laser beam will reach my bit of string, owing to the curvature of the Earth.

LincolnshireYokel

give_them_FA wrote: »

I don't think the Americans' laser beam will reach my bit of string, owing to the curvature of the Earth.

Ah but your failing to take into account gravitational lensing and the fact the universe is closed in 5 dimensions Given 26 billion years, they'll be able to read it from behind you.

give_them_FA

I'm starting to feel worried... wish I had never said all those things about George W. Bush now...

TrickyWicky

LincolnshireYokel wrote: »

Nah, your wrong. I worked in IT 25 years, doing wans, lans, comms, workstations and servers. Im extremely au fait with that sort of technology. One project I did was a secure video conferencing and document transfer system for Doctors.VOIP currently cannot be realistically tapped and decrypted by anyone, thats why the NSA tried to prevent the technology leaving the US many years ago. The police and security agencies may be able to see that a VOIP conversation is taking place, but not who is speaking, where they are or what they are saying, especially if you also use VPN. The first point you can tap it becomes the VPN server, which might be in another country, and its still encrypted at that point.

I also use Private Idaho to encrypt private emails. Thats another technology the NSA tried to stop. The beauty of it its a N-polynomial encryption. If they build a bigger computer to crack it, you just make the keys longer. Each increase in key length producaes an exponential increase in process time to crack it. Technically its an an RSA encryption algorithm based on Chebyshev polynomials. Mathematically they are a group of problems known as np-hard, because such polynomials are generally unsolvable.

oh i also use a double password Truecrypt volume for data...............

Believe me, i know far more about this subject than you can imagine.............

It doesn't matter what projects you've worked on or what you know, the point is that they have more manpower, brain power, and intelligence than you as a single person do. They also work on stuff like this every day of the week developing new technologies so as stated earlier I would stake money on them being able to eavesdrop on your communications if they wanted to.

give_them_FA wrote: »

I don't think the Americans' laser beam will reach my bit of string, owing to the curvature of the Earth.

I've known of this technique for a while now and watched a program on freeview about it earlier in the year. Moons ago the americans wanted to spy on the KGB so they had little prisms put into the glass used by the KGB (this meant the laser didn't have to hit it head on but at any angle as a prism bounces light back in the same direction it came from). No idea how the americans managed the trick but I suppose they bought the glass maker or something. Anyway it worked very well for them until one day one of their intel guys noticed that all their windows had this triangular shape in it. Curious as to what it was for and why they started experimenting until they found that you could use it to bounce light in the pattern of sound vibrations. At that point the CIA had to install countermeasures such as double glazing and outsize glazing panels so that the same technique couldn't be used against them.

Clever stuff and while most folks only know about this now it's been around since the late 70's / 80's hence my comment to LY about the CIA being able to tap him if they really wanted. Sure its easy to say it's encryption goes up exponentially and work out the brute force time on a single CPU etc but GPU processing is here how, works a lot faster and combined into a machine that can handle multiple GPUs...:eek:

The reality is though that unless you annoy someone the state isn't really going to be that worried about what you're doing.

mikey72

Who released the "uncrackable" encryption to the public, and who tells you the NSA want to prevent it? How dumb do you think they are really? So they watch the net, are you really worth the time for even the tea boy there? I know I'm not. Maybe if they find out about the alien I found in the cellar, or my nuclear powered time machine I'd raise a blip on their radar, but i don't think the NSA care if we park in Aldi for 5 minutes longer than our tickets say.

mikey72

TrickyWicky wrote: »

...........I've known of this technique for a while now and watched a program on freeview about it earlier in the year. .............

I saw it in Blue Thunder in 1983

give_them_FA

mikey72 wrote: »

but i don't think the NSA care if we park in Aldi for 5 minutes longer than our tickets say.

True, but what happens when Parking Eye acquire this technology? We are all doomed! They will be able to issue parking charge notices via a geostationary satellite!

LincolnshireYokel

If you want to believe they have magic powers then you carry on, the Tooth Fairy will be here soon................like most technologies, if you don't really understand the problem, your even less likely to understand how the solution may or may not work. And I know for a fact you dont understand encryption tehcnologies and n-polynomials

Go and find a professional mathematician, and talk to them.....because what ive posted isn't opinion, its fact. But dont take my word for it.........
http://www.slate.com/articles/technology/webhead/2004/02/can_they_hear_you_now.html

Im done on this subject, its always a waste of time talking about it to non techies, especially ones who live in awe of the establishment and have a victim mentality............