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The Clapper: Light work

Jul 19, 2026 · 1h 10m

Summary

Host David Pierce and guests Heidi Ledford and Alison Marsh explore the history of the Clapper, a 1980s device that turned lights on and off via sound. They discuss its flawed technology, which caused false triggers from barking dogs and TV noises, and its iconic marketing campaign. The episode highlights the product's cultural impact despite its technical failures and legal battles.

Topics discussed

Introduction to the Clapper and the concept of cursed objects The 1980s context: early home automation and answering machines The invention story: Peter Lilliquist and the initial prototype Joseph P. Dot: The marketing genius behind Chia Pets Early failures: The device breaking appliances and initial testing The lawsuit and the transfer of rights to Joseph P. Dot Engineering the Clapper: Carlisle Stevens and the 'crapper' nickname The patent language and the problem of remote controls The iconic commercial: 'Clap On, Clap Off' and cultural impact How it works: Two-clap sequences and timing requirements User complaints: False positives from dogs, babies, and TV shows Market performance and the 'smart home' pitch of the 90s Clapper Plus: Adding remote controls and the cycle of tech Why clapping? The cultural staying power of the interaction The Cricket: A failed attempt to use sound instead of clapping The Clapper as a novelty item and its place in tech history The modern Clapper: Amazon sales and current user reviews Who buys the Clapper today? Nostalgia and holiday lights The Time Matrix: Was it the right idea at the right time? What should modern smart homes steal from the Clapper? Legacy and ethics: Did the Clapper change history or just hope? Final verdict: The Clapper's place in the Hall of Fame
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