Tennessee Code Title 39. Criminal Offenses § 39-17-1506

(a) Every person who sells tobacco, smoking hemp, vapor products, or smokeless nicotine products at retail shall post conspicuously and keep so posted at the place of business a sign, no smaller than ninety-three and one-half (93 1/2 ) square inches, to ensure that it is likely to be read at each point of sale, stating the following:

STATE LAW STRICTLY PROHIBITS THE SALE OF TOBACCO PRODUCTS, VAPOR PRODUCTS, SMOKELESS NICOTINE PRODUCTS, OR SMOKING PARAPHERNALIA TO PERSONS UNDER THE AGE OF TWENTY-ONE (21) YEARS

PROOF OF AGE MAY BE REQUIRED

(b) Unless another notice is required by federal law, the notice required by this section and the notice required by § 39-15-411 shall be the only notice regarding tobacco, smoking hemp, vapor products, or smokeless nicotine products required to be posted or maintained in any store that sells tobacco, smoking hemp, vapor products, or smokeless nicotine products at retail.