Hareca
is a rechargeable contactless smart card ticketing system for public transport in Okayama , Japan , introduced by Okayama Electric Tramway ( Okaden ) , Ryōbi Bus , and Shimotsui Dentetsu ( Shimoden ) , from October 1 , 2006 . 
<triplet> Okayama <subj> Japan <obj> country <triplet> Okayama Electric Tramway <subj> Okayama <obj> located in the administrative territorial entity <subj> Japan <obj> country