| http://www.w3.org/ns/prov#value | - Still other ways in which the status of a user of a portable electronic device (20) may be determined (e.g., whether the user is a driver or a passenger in a car), and ways in which such a determination may be used to influence the functioning of one or more components of a portable electronic device system (10) (e.g., a safety circuit (40)), will be apparent to those of ordinary skill in the art.
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