NPR just did a story this year that it's being used in the manufacturing industry, so it's still being used, just not for leisure: http://www.npr.org/sections/alltechconsidered/2017/03/18/514...
TLDR it can find barcodes and scan them faster than the human eye can. Yeah fascinating.
Considering how important some seemingly minor assembly problems have been this is probably a lot more valuable than you might think as it reduces people guessing vs. going to the effort to look something up.