But let’s be honest: how many people actually remember its syntax?
A passkey with PRF can make unlocking your credential manager (where all of your other passkeys and credentials are stored) much faster and more secure.
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Source: Computational Materials Science, Volume 266
Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.