The device receives input by stroking with the thumb over a certain area (prototype A) or the user must turn a little knob in a circular path (prototype B), respectively. The output is transmitted to the remote unit that produces circular movements created by a small arm powered by a miniature servo motor. The device can be used to touch either each other’s hands or the partner on other parts of the body.
Source: Eichhorn, E., Wettach, R., and Hornecker, E. 2008. A stroking device for spatially separated couples. In Proceedings of the 10th International Conference on Human Computer Interaction with Mobile Devices and Services (MobileHCI’08). ACM Press, 303–306.
http://www.bluepixel.de/_en/projekte/weiter/remote/remote.html
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