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Research Unveils Improved Method To Let Computers Know You Are Human 91

Posted by Unknown Lamer
from the until-computers-improve dept.
An anonymous reader writes CAPTCHA services that require users to recognize and type in static distorted characters may be a method of the past, according to studies published by researchers at the University of Alabama at Birmingham. Researchers focused on a broad form of gamelike CAPTCHAs, called dynamic cognitive game, or DCG, CAPTCHAs, which challenge the user to perform a gamelike cognitive task interacting with a series of dynamic images. For example, in a "ship parking" DCG challenge, the user is required to identify the boat from a set of moving objects and drag-and-drop it to the available "dock" location. The puzzle is easy for the human user to solve, but may be difficult for a computer program to figure out. The game-like nature may make the process more engaging for the user compared to conventional text-based CAPTCHAs. There are a couple research papers available: "A Three-Way Investigation of a Game-CAPTCHA: Automated Attacks, Relay Attacks and Usability" and "Dynamic Cognitive Game CAPTCHA Usability and Detection of Streaming-Based Farming."

Comment: Re:the joker in the formula (Score 1) 686

by GigsVT (#47219767) Attached to: Aliens and the Fermi Paradox

You are ignoring the fact that it seems like one highly intelligent and technology-developing species could probably not evolve in coexistence with another one on the same planet, at some point one would win and kill off the other one.

I'm sure it's been proposed/discussed many times before, but I don't know if this concept has an "official" name or not.

Comment: Re:Progenitors? (Score 4, Interesting) 686

by GigsVT (#47219707) Attached to: Aliens and the Fermi Paradox

Directionality is a mostly irrelevant consideration.

The fact that an antenna is 9db or 30db higher in one direction quickly becomes irrelevant with the vast distances of space. Antennas don't work like flashlights. They are more like a light bulb with a two-way mirror on one side that reflects 50% of the light and lets 50% of it through out the back. At VHF and above, things like mountains act like mirrors that reflect signals straight up (among other directions), as well.

You are somewhat wrong about AM... at least broadcast band AM is mostly only directional in the sense that there's dead zones straight off the ends of the dipole. They are shooting quite a bit of signal upward. Our ionosphere does strongly reflect and attenuate what would make it out to space in those bands though.

This goes toward your comment about the 50s and 60s... we have far more powerful transmitters in operation now (some VHF TV the better part of 1 megawatt!), and in bands that aren't reflected by the ionosphere. If anything we are getting louder and louder.

Unfortunately the first thing they might see of humanity is free-to-air broadcast TV, and just assume that we are all complete idiots.

Comment: Re:The Re-Hate Campaign (Score -1, Flamebait) 1116

by claar (#46698219) Attached to: Mozilla CEO Firestorm Likely Violated California Law

You're dealing with Stanch Atheists. Don't expect them to be rational or intelligent. They've gone tribal, circled the wagons, and are now locked into anti-religious flame wars and are unable to learn better.

Isn't painting with broad stokes fun! There's surely no actual rational, intelligent creatures in these enormous labels!

Comment: Copyright C+Ds aren't "trolling" (Score 3, Interesting) 98

by GigsVT (#46324183) Attached to: Why Copyright Trolling In Canada Doesn't Pay

A studio enforcing their copyright against personal-use downloads might be a somewhat crappy and ill-advised practice, but it's not "trolling". To me if you were going to call something "copyright trolling" it would be more like using copyright letters to silence people, aka SLAPP, not using copyright the way it was intended, to prevent people other than the owner from making copies of the entire media as a substitute to buying it from the media holder.

Money doesn't talk, it swears. -- Bob Dylan

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