Grade 9-12: A zero-knowledge proof for your age, Discord's classifier and its two errors, the anatomy of two deepfakes, what TLS actually does, and engineering a robot that's safe to stand next to.

About This Episode

This week on TechCheck for grades 9–12: the EU's proposed KIDS Act relies on a free, open-source age app built on zero-knowledge proofs that reveals one bit — yes or no; Discord now infers every user's age group with a classifier, and we ask which error to tune against; a voice-cloned, lip-synced Zuckerberg crypto scam and a watermarked AI embassy 'selfie' show how deepfakes are built and caught; Chrome 154 warns before plain-HTTP sites, and we unpack encryption and certificate authentication in TLS; and Agility's Digit 5 makes human safety the core design spec. CS-, debate- and career-ready.This week on “Tech & Society” (Grades 9–12):• Proving Your Age Without Your Name: Europe's Zero-Knowledge App• Discord's Age Guess: How a Classifier Decides How Old You Are• Anatomy of Two Deepfakes: A Voice Clone and a Watermarked Selfie• Chrome Now Warns You Before an HTTP Site — What TLS Actually Does• Engineering a Robot That's Safe to Stand Next To0:00 Intro0:58 Proving Your Age Without Your Name: Europe's Zero-Knowledge App2:23 Discord's Age Guess: How a Classifier Decides How Old You Are3:48 Anatomy of Two Deepfakes: A Voice Clone and a Watermarked Selfie5:14 Chrome Now Warns You Before an HTTP Site — What TLS Actually Does6:35 Engineering a Robot That's Safe to Stand Next To8:00 Recap & takeaways