| http://www.w3.org/ns/prov#value | - The energy emitter may emit energy configured to penetrate the epidermis of the individual 601 to measure an internal, sub-epidermal characteristic of the individual 601, such as a non-volitional process occurring within the user (e.g., a heartbeat, nervous system response, etc.), a sub-epidermal structure within the user (e.g., a histological characteristic, such as a blood vessel pattern, a skel
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