The Portal Denial System is not like those other laser-guard systems you've seen in the movies. The movie systems, which are typically guarding something very valuable, make beautiful laser light shows like you might have seen in a 1980's nightclub.
Ionatron's Portal Denial System, on the other hand, is what an intelligent (and angry) insect would make if insects could design a human-zapper.
The device beams an ultraviolet laser across the doorway; this causes a localized atmospheric bloom - the air ionizes into a plasma. Since this laser-induced plasma channel (LIPC) is electrically conductive, a powerful electric current can be sent across the doorway via the channel.
(Portal Denial System Laser-Induced Plasma Channel Electrolaser)
If you're wondering how much juice can be sent across the doorway, keep in mind that electrolasers can also be used to study lightning, since both use plasma channels as a conduit for electricity.
Background Draw-a-Secret (BDAS) Makes Graphical Passwords
Interesting security technique that takes advantage of the greater ease with which we all recall pictures, as opposed to the kind of alphanumeric strings IT techs want us to use for passwords.
ID-U Biometrics Eye Tracking Signature
Interesting new method of secure identification gathers a unique response to stimulus each time; old data cannot be copied and presented to the system.
PCASS And The Original Handheld Lie Detector
The idea that a simple device could tell a soldier who was lying is an attractive idea; but can it really work? You might be surprised about the origin of the lie detector idea.
Technovelgy (that's tech-novel-gee!)
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Sky City's 220 Stories Are Go
'It rested among green parklands and... stood in total isolation, a glittering block of whites and flashing windows dotted with colors.'
Robo-Raven Flapping Wing Robot Bird
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'