Finally, you can surf the internet while you are on the highway buses which I described below.
Like the other free wifi service in tourist spots, you need to register your email address to use. For the first 10mins, you don't need to log in but if you like to use it longer, you need to verify your email address so use this 10mins for verification. I think they said you can use the internet up to 60mins/log in and up to 5times? per day or something like that.
Between Osaka and Tango region(via Miyazu, Amanohashidate)
http://seasidekyoto.blogspot.com/2013/01/direct-bus-from-osaka.html
Between Kyoto and Tango region(via Miyazu, Amanohashidate)
http://seasidekyoto.blogspot.com/2013/01/direct-bus-from-kyoto.html
Between Kyoto and Ine(via Amanohashidate)
http://seasidekyoto.blogspot.com/2017/03/express-bus-to-amanohashidate-and-ine.html