In 1985, in an effort to combat software piracy. ASAP Developments invented the LensLok - a plastic lens in a foldaway frame.The LensLok device was essentially a row of prisms arranged vertically in a plastic holder. In this video we take a closer look at the LensLok to understand how it works, and why it ultimately failed as an anti-piracy device. ► Consider supporting me - https://www.patreon.com/ModernVintageGamer Sources/Credits: ► Commercial Breaks Documentary - https://www.youtube.com/watch?v=ZoDh61sgCOg ► Copy Protection in Jet Set Willy - https://intarch.ac.uk/journal/issue45/2/1.html ► Crash Issue 24 - http://www.crashonline.org.uk/24/lenslok.htm Social Media Links : ► Check me out on Facebook : https://www.facebook.com/ModernVintageGamer ► BandCamp : https://modernvintagegamer.bandcamp.com/ ► The Real MVP Podcast : https://player.fm/series/the-real-mvp ► Follow me on Twitter : https://twitter.com/ModernVintageG #LensLok #ZXSpectrum #Elite