The system consists of two pairs of devices. Each contains a solenoid, containing a metal rod surrounded by a wire coil. When the sender is shaken, the movement of the rod induces a current in the coil. When this is sent to the receiver, the current causes its solenoid to shake the receiver proportionally. Shakers could be of a form and size that makes them easy to carry or wear it as jewellery, using pager or cellphone technology
to link them.
Souce: Strong, R. and Gaver, W. 1996. Feather, Scent & Shaker: Supporting simple intimacy in videos. In Extended Proceedings of CSCW. ACM Press, 29–30.
