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Robotics

Submission + - Tweenbots Test NYC Pedestrian-Robot Relations (tweenbots.com)

MBCook writes: "Kacie Kinzer seems to have come up with the idea to see if people in New York City would help a cute little robot get where it's going, and thus created tweenbots.

Tweenbots are human-dependent robots that navigate the city with the help of pedestrians they encounter. Rolling at a constant speed, in a straight line, Tweenbots have a destination displayed on a flag, and rely on people they meet to read this flag and to aim them in the right direction to reach their goal.

"

Movies

Submission + - Fraudulent Netflix Ratings

Nom du Keyboard writes: For not the first time I notice a new film that hasn't yet even reached the theaters with hundreds of positive votes and/or reviews recorded on Netflix. This time the move is Inkheart. For a movie that doesn't even hit the theaters until January 23 it already has 428 votes and a rating of 4.3 (out of five) on Netflix. Seems more than a bit fraudulent to me. Also it has a review that doesn't even review the movie, but instead says the books are great therefore the movie should be too. Does the word "shills" come to mind? With millions spent just to promote a movie are a few hundred of that going to phony voters, or have that many people actually seen the film and just can't wait to rush home and log onto Netflix to vote? Just what is the responsibility here to provide honest ratings?
Security

Solution Against Cold Boot Attack In the Making 260

Bubba writes "I just discovered this blog: Frozen Cache. It describes a concept for preventing cold boot attacks by saving the encryption key in the CPU cache. It is claimed that by disabling the CPU cache the key will remain in cache and won't be written to memory. The blog says they're working on a proof-of-concept implementation for Linux. Could this really turn out to be a working solution?" Update: 01/19 20:26 GMT by KD : Jacob Appelbaum, one of the authors of the cold boot attack paper, wrote in with this comment: "It's not a solution. It simply seeks to make it more obscure but an attacker would certainly still be able to pull off the attack. From what is on that blog, there's still a full keyschedule in memory at this time. This is how we reconstruct the key, the redundant information in memory; it's not just the 128/256 bit key itself. For older methods, they needed the actual specific key bits but we don't need them because we recreate them. Basically, the CPU is acting as a ghetto crypto co-processer. Emphasis on ghetto. It's a nice suggestion but the devil is in the details and sadly the details in this case aren't really up to snuff. It's a bogus solution."

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