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"In 1970 I found little difficulty staying 30 years ahead of the man in the street, and now I find it difficult to stay 18 months ahead of the man on the street."
- Vernor Vinge

Voice-Changing Bowtie  
  Special device allows wearer to take on the voice of another person at will.  


(Voice-changing tie)

Technovelgy from Case Closed (Detective Conan), by Gosho Aoyama.
Published by Shonen Sunday Magazine in 1994
Additional resources -

Young Detective Conan uses this device to disguise his voice when speaking to others by phone.


(Voice-changing tie)

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Additional resources:
  More Ideas and Technology from Case Closed (Detective Conan)
  More Ideas and Technology by Gosho Aoyama
  Tech news articles related to Case Closed (Detective Conan)
  Tech news articles related to works by Gosho Aoyama

Voice-Changing Bowtie-related news articles:
  - VAuth Voice Security Wearable From University of Michigan

Articles related to Surveillance
A System To Defeat AI Face Recognition
Smart TVs Are Listening!
Police Drones In China Would Like To Have A Word With You
Detecting Drones In Ukraine With Candy (Sukork)

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