Haw. Rev. Stat. § 328J-18: Placement of cigarettes and tobacco products.

(a) Except as otherwise provided under this section, a retailer may sell cigarettes, smokeless tobacco, and all other tobacco products only in a direct, face-to-face exchange between the retailer and the consumer. Examples of methods of sale that are not permitted include vending machines and self-service displays.

(b) A retailer may only display or store cigarettes and tobacco products:

(1) Behind a sales counter or in any other area of the establishment that is inaccessible to the public; or

(2) In a locked container.

(c) This section shall not apply to:

(1) A duty-free sales enterprise selling duty-free merchandise in accordance with the provisions of title 19 United States Code section 1555(b), and any implementing regulations; and

(2) Retail tobacco stores, bars, or any other establishment for which the minimum age for admission is eighteen.