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Originally posted by scwizard
daniel_g: I addressed this, the solution is public key cryptography. You don't need a trusted company to hold all keys, because Alice can encrypt her message using Bob's public key, and then only Bob can decrypt the message. Also you can indicate that the message is for Alice by including Alice's public key with the message unencrypted, or some other identification.
You say it's wasting battery power to send a message to a tower, but you want the data connection on 24/7 so other devices can relay through your phone? That would drain the battery WAY quicker.
Originally posted by scwizardWell lets say Alice and Bob are currently sitting in the same class. Does Alice's cell phone really need to waste electricity sending a wireless signal that can be heard as far away as the nearest cell phone tower.
Any computer that receives that message or a piece of that message can rebroadcast it if it so desires.
Originally posted by CHA0S
reply to post by daniel_g
Thank you for answering these questions, it saved me some time. You are correct, it's hard to manage encryption keys with a network such as that used for mobile phones. And you can actually send data straight to another phone close to you, it's called blue-tooth.
Originally posted by Alxandro
It's happening, orrather, we allow it to happen for the sake of "convenience", simple as that.
We've just gotten accustomed to it without ever questioning it.
Truly not not the best or safest means of communicating but it is what it is, and it's the preferred method of communication (PMC) for many.
BTW, did you know that all ATM's actually run on a Windows CE platform?
Scary, ain't it?
Freedom from the limits of geography, from the limits of economics, from the limits of war, unrest and disaster.
Ordinary mobile phones rely on towers, wires in the ground, and other expensive infrastructure. That infrastructure can be damaged by disaster, war or terrorism. Local geography can also make it difficult or impossible to install, and so vast tracts of land are left without coverage, often in areas of great need.
But the Serval Batphone project is different. In its simplest form, Serval Batphone, as it’s name implies, just needs a phone. There is no infrastructure to be maintained, protected which also reduces environmental impact. Any two Serval-compatible phones can automatically form a mesh network. Existing mobile phones can be used, too, with Serval’s mesh-enabled phone tower design. Importantly for times of crisis, your existing phone number will work on a Serval network.