(concept sketch)
The object on the left is translucent, and made of soft silicone. To use it, one member of a couple puts their hand into their (customized) handprint. Their significant other’s handprint lights up and starts to pulse in rhythm with the first user’s heartbeat. When both have their hands in the handprints, a small heater warms the device, in an attempt to simulate the body heat of the other. Both partners place their hand into the device at the same time by wrapping around the central post. The outer sleeve on one device contracts in correspondence to the pressure on the inner post of the other device.
Source: Kaye, J. ‘Jofish’ and Goulding, L. 2004. Intimate objects. In Proceedings of the Conference on Designing Interactive Systems Processes, Practices, Methods, and Techniques (DIS’04). ACM Press, 341–344.