When I was working for a correspondence school, we spent most of our days either correcting the homework that was sent in or conducting five-minute telephone lessons. When we were in a non-busy period, we wrote and made textbooks and other learning materials. One of the things my boss and I made was a guide to how to shake hands. Part of my work was drawing transparencies that illustrated the various types of "bad" handshakes and, as the final slide, a "good" handshake.
Somewhere in my archives, I have drawings of these types of typical Japanese bad shakes. They were the "dead fish" (limp and weak), the "bone crusher" (too hard by a mile), the politician (grabbing the other person's hand) and the finger shake (offering only two fingers). In group orientations, we'd often go out of our way to teach people precisely how to shake because they were often so bad at it. Even my private students had to be taught how to offer their hand, how many times to shake, how to grip, and when to release before taking part in interviews.
I don't miss the uncomfortable handshakes that I used to receive in Japan from people who believed that their way of greeting (bowing) was so sophisticated that they needed a detailed and explicit guide, but assumed that our way was so simple that they could just wing it.