S.D. Codified Laws § 40-3-27
The Animal Industry Board may develop and implement specific programs for the identification of animals and premises involved in animal movements. Any program implemented pursuant to §§ 40-3-27 to 40-3-29, inclusive, must provide for confidentiality of identification records other than those records requested by law enforcement officers of the state and those records used for mandatory disease control or eradication efforts. A livestock owner may choose to identify animals using any methods set forth in 9 C.F.R. part 86, as adopted on January 9, 2013, as well as any additional methods that are later approved by the South Dakota Animal Industry Board pursuant to this section.
Any identification program implemented pursuant to §§ 40-3-27 to 40-3-29, inclusive, shall be for the sole purpose of maintaining animal health and ensuring the safety of the food supply.
SDCL 40-3-27