Duty-free purchase permission in Indian currency allows limited purchases by departing nationals subject to ID verification and record checks. Indian nationals departing on foreign visits may purchase goods from international airport duty free shops in Indian currency up to a specified per-passenger limit only on production of passport or travel documents; duty free shops must maintain records of such sales in Indian currency subject to random checks to prevent misuse, and wide publicity of the permission is required with implementation difficulties to be reported to the Board.