Nippon Telegraph and Telephone Corporation: RedTacton

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Technology is making many things easier.
Nippon Telegraph and Telephone Corporation(NTT, headquartered in Chiyoda-ku, Tokyo. President and CEO, Norio Wada) is pursuing research and development of an innovative Human Area Networking technology called “RedTacton”. • REDTACTON safely turns the surface of the human body into a data transmission path at speeds up to 10 Mbps between any two points on the body. •REDTACTON uses the minute electric field emitted on the surface of the human body. •REDTACTON enables the first practical Human Area Network between body-centered electronic devices and PCs or other network devices embedded in the environment . •REDTACTON can be used for intuitive operation of computer-based systems in daily life, temporary one-to-one private networks based on personal handshaking, device personalization, security are enabled by the redtaction.


“RedTacton” takes a different technical approach. Instead of relying on electromagnetic waves or light waves to carry data. • RedTacton uses weak electric fields on the surface of the body as a transmission medium. •“RedTacton relies upon the principle that the optical properties of an electro-optic crystal vary according to the changes of a weak electric field”. •A RedTacton transmitter couples with extremely weak electric fields on the surface of the body. •The weak electric fields pass through the body to a RedTacton receiver, where the weak electric fields affects the optical properties of an electro-optic crystal. • The extent to which the optical properties are changed is detected by laser light which is then converted to an electrical signal by a detector circuit.


Ea Electric field induced by the transmitter.
Eb Electric field returning to the ground of the transmitter. •Ec Electric...
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