RCID is an information transfer technology using (quasi-) static-electric fields.
RCID is based on the transfer of information using electrostatic fields.
This is unlike RFID (Radio Frequency IDentification) which is based on magnetic and/or electro-magnetic fields.
The limit to frequencies of less than 1 MHz (i.e. to quasi-static conditions) allows transfer of an information signal which has various potential applications.
This transfer technology has no additional physiological effects.
The electrostatic voltage used to transmit the RCID signals is several million times less than that encountered on a day-to-day basis, e.g. when you comb your hair or use a mobile phone.
Information obtained from the rcid website (http://www.rcid.com).
In typical environments the transfer capacity is interference-limited. This is because electrical- and electronic equipment emits interference at frequencies of below 1 MHz.
As electrostatic fields are used, the information transfer takes place via electrodes (not antennae). The 'send' signal couples to the user's body. One half of the current circuit is closed as soon as the user contacts the receptor electrode. The other half is closed via the atmosphere.
The medium (transmitter: Tx) is typically the size of a car key. The receiver (Rx) electrodes can be any shape. Handles, buttons, surfaces and even footwell mats and transparent electrodes are all options.