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"If we're going to be consistent and advocate freedom of speech we have to advocate freedom of encrypted speech too. The genie is out of the bottle, cryptologically."
- Neal Stephenson

Retinal Projection  
  A method for projecting advertisements directly on the retina.  

One remarkable thing about this idea is that you will also find it in the most modern of novels written in the cyberpunk tradition - Starfish by Peter Watts (see eyecaps ).

They listened to the safety cranks and stopped us from projecting our messages on aircar windows - but we bounced back. Lab tells me ... that soon we'll be testing a system that projects directly on the retina of the eye.
From The Space Merchants, by Frederik Pohl (w/CM Kornbluth).
Published by St. Martin's Press in 1952
Additional resources -

Is this the first idea for a heads-up display? The earliest reference for working heads-up displays is the early 1970's in USAF fighter jets.

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Additional resources:
  More Ideas and Technology from The Space Merchants
  More Ideas and Technology by Frederik Pohl (w/CM Kornbluth)
  Tech news articles related to The Space Merchants
  Tech news articles related to works by Frederik Pohl (w/CM Kornbluth)

Retinal Projection-related news articles:
  - Microvision Laser Monocle: Technician Retina-Vision
  - Virtual Retinal Displays Get All Geordi With It
  - Retinal Scanning Display Projects Images On Retina
  - Brother AirScouter Retinal Imaging Display Video
  - Neuroprosthetic Projects Words Directly Onto Retina
  - Avegant Glyph Virtual Retinal Display
  - '3D Light Sculpture' Projected Directly Onto Retina
  - Bosch Smartglasses Laser Paints AR Image On Your Retina

Articles related to Display
Bosch Smartglasses Laser Paints AR Image On Your Retina
A New Way To Run Into Things
Unfurl The Future! Huawei Mate X versus Galaxy Fold
North Focals Smart Glasses Provide Augmented Reality In Style

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