Conversation so far:
What is a laser turntable?
uses a laser to read vinyl discs optically, without physical contact.
When was this created?
Various other laser-based turntables were tried during the 1990s.
Did this become popular?
CANNOTANSWER.

Question: What did you find interesting in this section?
Self-contained rewrite: In addition to the laser turntables, what did you find interesting in the article?