add tin can telephone image

ahdinosaur · Nov 27, 2023 · 3f266ca · 3f266ca
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 A protocol for a secure peer-to-peer message stream, after you've done a secure peer-to-peer key exchange.
 
+![Fig 7 Le Telephone by T du Moncel Paris 1880](./tin-can-telephone.jpg)
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 (Note: This protocol has not been audited to be safe. Use at your own risk.)
 
 ## Pre-requisites

diff --git a/tin-can-telephone.jpg b/tin-can-telephone.jpg