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the NFC means near field communicationa set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm of each other
ECG means ELECTRO CARDIO GRAPHY
Description
Electrocardiography is the process of producing an electrocardiogram, a recording - a graph of voltage versus time - of the electrical activity of the heart using electrodes placed on the skin.
SENSOR MEANS A DEVICE WHICH DETECTS or measures a physical property and records, indicates, or otherwise responds to it.