This hacker conference installed a literal antivirus monitoring system

Organizers had a way for attendees to track CO₂ levels throughout the venue—even before they arrived.

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[rbryanh]

New Zealand’s premier hacker conference, Kawaiicon, quietly launched a real-time, room-by-room carbon dioxide monitoring system for attendees.

Brilliant. Unfortunately, I live in the U.S. where any such effort would result in people waving guns, screaming about freedom, and demanding their God-given right to "Any damned disease I want!"