Tennessee Code Title 55. Motor and Other Vehicles § 55-10-210

(a) As used in this section, “license plate flipper” means a manual, electronic, or mechanical device designed or adapted to be installed on a motor vehicle that either:

(b) A person commits an offense if a person acts with criminal negligence, as defined in § 39-11-106, and purchases or possesses a license plate flipper.

(c) A person commits an offense if a person acts with criminal negligence, as defined in § 39-11-106, and manufactures, sells, offers to sell, or otherwise distributes a license plate flipper.

(e) A motor vehicle that is found with an installed license plate flipper may be seized or impounded by a law enforcement officer as evidence;  provided, that the owner or operator of the motor vehicle, if present, must be provided the opportunity to promptly remove the license plate flipper if it can be removed safely.  A law enforcement officer, in the officer's discretion, may direct the owner or operator of the motor vehicle to move the vehicle to a location that the officer designates for the safe removal of the license plate flipper.  If the license plate flipper is removed, then the law enforcement officer may seize only the license plate flipper as contraband.  If the motor vehicle is impounded, then the owner of the vehicle is responsible for payment of towing and impounding fees and reasonable costs to remove the license plate flipper.