Montedio Yamagata last weekend launched the MONTEDIO FREE Wi-Fi service at their home ground of ND Soft Stadium.
In addition to internet connectivity, fans who use the service will be able to access premium content including videos and photo apps.
Montedio are the third J.League club to introduce such a service, following Omiya Ardija (NACK5 Stadium) and Kawasaki Frontale (Todoroki Stadium).
The recently-announced Smart Stadium initiative between the J.League, DAZN, and NTT Group will seek to install similar services across all J1 League home grounds and beyond.