Bruno Souza on Twitter: "@gunnarmorling @DavidBuckJP @jen_s_nicholson @java The Java ring could (can?) do that. Not contactless, but it's connector is a special "1-wire" connector, that requires a light touch to operate.
The Java Ring
Found a Java Ring while cleaning up. It's embedded with an… | Flickr
Java Ring - tokyo1970.com
JAVA RING By Sowmya B N. - ppt download
Java Ring
Figure 1 from Join and capture: a model for nomadic interaction | Semantic Scholar