Looking through some prison tech - literally.
Prison Radios on ebay https://ebay.to/2wcvY6s (Affiliated Link)
Prison TV's on ebay https://ebay.to/3bL6sEl (Affiliated Link)

Articles and resources used, referenced and related to this video
https://www.newyorker.com/tech/annals...
https://www.electronicbeats.net/the-f...
https://www.prisonlandscapes.com
https://99percentinvisible.org/episod...
https://www.greatbigstory.com/stories...
https://money.cnn.com/2015/07/23/tech...
https://www.riaa.com/u-s-sales-database/
https://www.statista.com/statistics/2...

INFO:
This is a history video. It’s about old tech. It’s old tech from the USA. Every country and every prison in those countries have different rules from one another, rules that change over time. The tech shown and discussed is from a variety of time periods and locations.

FAQ
Q) So is this why they made (insert a transparent tech object here - usually a Gameboy) in a clear case?
A) They also made clear tech to sell to people who wanted tech in a clear case. It was a bit of a trend for a while. See: Gamebox, N64, Xbox Crystal, Palm Pilot amongst others.

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Jerobeam Fenderson for the oscilloscope animation: http://oscilloscopemusic.com/

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---AFFILIATED LINKS/ADVERTISING NOTICE------
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When you click on links to various merchants posted here and make a purchase, this can result in me earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network & Amazon