Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?

Comment Re:Voting - how to ensure a secret ballot? (Score 1) 69

You logging into the voting machine is recorded when you vote. Information about who you voted for is not recorded.

And how can you be certain that when the votes are counted, your vote is being included? Having something recorded on the blockchain (or any other public record) doesn't help at all with that; you still have to trust the people counting the votes to count them fairly. Or if the votes are counted by machine, you have to trust those who built and operate the machine. If somebody queries the totals after the election, they can't use the blockchain records to check that the total is correct; conversely it's possible for a malicious actor to stuff ballots without ever recording it in the blockchain.

There are proposals for cryptographic voting systems that work properly. When you vote, your vote is recorded so that you can check that it was counted (and anyone can check that the count includes all votes cast); but you cannot find out or demonstrate what the vote was. This is an interesting area of research but it is a lot more complicated than just saying 'add something to the blockchain'. Doing that by itself adds nothing.

Comment Re:Voting - how to ensure a secret ballot? (Score 1) 69

Having an accurate count that *shows how everybody voted* is not how elections are done. You vote in secret, and nobody else can find out for sure how you voted, not even if you want to show it to them. If all votes are recorded publicly then there is no longer a secret ballot. That's unrelated to having an accurate count of votes, which is obviously important.

Comment Re:Voting - how to ensure a secret ballot? (Score 1) 69

If you had bothered, you'd know that you can sign a message using your private key that proves indeed, that you did something on the blockchain, whether its voting or whatever.

Right. But how do you do that while ensuring a secret ballot? In other words so you *cannot* prove, whether you want to or not, who you voted for?

There are suggested protocols for having a verifiable yet secret ballot, but they are not completely straightforward. Unless the secret ballot part is sorted out properly, recording all votes in a public ledger (be it the blockchain or anything else) doesn't give a free and fair election.

Comment Voting - how to ensure a secret ballot? (Score 2) 69

A lot of electronic voting proposals fail to ensure a secret ballot - which means you *cannot* prove how you voted, whether you want to or not. If votes are published in the blockchain it's hard to see how this would be achieved; although there are cryptographic proposals for voting systems that would let you make sure your vote (and every vote) has been counted without being able to prove which way any individual voted. So for elections I don't think blockchain voting is really going to fly. It would work for situations where the ballot is not secret, like votes in most countries' legislative assemblies, where you can see all the votes cast by each representative. But there, only the true tinfoil hat brigade would see the need for the tamper-proof Bitcoin log, given that the assembly's proceedings are surely part of the public record anyway.

Comment Re:Better pictures? (Score 2) 75

Perhaps the input images they used were also low-res? If they had used higher resolution photos it would have taken much more computing time to run them through the neural network for hundreds of iterations. I guess the same neural networks could also enhance the resolution of the images by being fed a scaled-up version and outputting it with more (imagined) detail.

Comment Re:Diminishing returns (Score 1) 181

I use a couple of 24" 4k monitors. Just set 200% font scaling and you have things appearing the same size by default as they would on a 1920x1080 monitor with normal font scaling. But they look much better rendered, and if you want you can zoom out to smaller text sizes while remaining legible.

Comment Re:News that matters! (Score 1) 92

Sadly this snippet does not work in recent perl versions (I tried 5.18). 'each window' for example now needs to be 'each %window' since hashes must always have the % prefix. (In ancient perl versions the % was added implicitly if not given)

Comment Re:History repeats itself... (Score 1) 82

Acorn's PC emulator emulated an 8086 (not 80186). There are a couple of extra instructions added in the later 80186. Not much software uses them but apparently the game Star Trek 25th Anniversary did. Dave Lawrence's FasterPC emulator provided a virtual 80186 (though the CPU emulation was still just as slow, the video support was faster and PC speaker emulation much better, so it could play many DOS games that used 320x200 res in 256 colours. Like Civilization...)

You've been Berkeley'ed!