A licensed retailer may not display cigarettes for sale unless the cigarettes are located behind a counter in an area accessible only to the licensed retailer and employees of the licensed retailer. A licensed retailer may not sell cigarettes to an individual unless the licensed retailer verifies, in accordance with paragraph (2) of this subsection, that the individual is at least 21 years old. Subject to paragraph (3) of this subsection, a licensed retailer may verify an individual’s age only: by means of a government–issued photo identification containing the individual’s date of birth; and in a direct face–to–face exchange without the assistance of any electronic or mechanical device. A licensed retailer is not required to verify the age of an individual at least 30 years old.