Hands on with Project Astra, Google's see-all assistantIna FriedA tester uses the experimental Project Astra app on his mobile device to identify a building. Credit: GoogleGoogle is showing off an updated version of Project Astra, the all-seeing, all-hearing and all-remembering experimental AI assistant it showed a glimpse of earlier this year.Why it matters: Astra offers a preview for some of the ways future AI assistants will help navigate the physical world.How it works: Astra uses either an ...