thumb|Lenslok prism and audio cassette
thumb|Lenslok prism and audio cassette
Lenslok is a copy protection mechanism found in some computer games and other software on the Atari 8-bit computers, Commodore 64, ZX Spectrum, Sinclair QL, MSX and Amstrad CPC. It was created by John Frost, an inventor and electronics consultant, and marketed by ASAP Developments, a subsidiary of J Rothschild Holdings. The first game to use it was Elite for the ZX Spectrum.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).