Barkas in not only experienced rigger, but also teacher and his Shibari Dojo Vienna is one of four places in the world, which received license for Osada Ryu, traditional japanese bondage. Barkas is not bound by traditional conventions and altough we can find many traditional components in his way of tying, he is not afraid to combine is with his martial arts skills. In past years he evolved his own personalized bondage style, his teacher Osada Steve called this style Ranboo. This style excells in dynamics, speed, right distance at the right moment and, as Barkas says, a bit of violence. Event through speed and distance, which changes often during his work, Barkas is fully concentrated on his partner and she does not lose her contact with rigger. Barkas is very active on Vienna shibari scene.