S.D. Codified Laws § 33-10-161
Cruel and unusual punishments prohibited
Punishment by flogging, or by branding, marking, or tattooing on the body, or any other cruel or unusual punishment may not be adjudged by a court-martial or inflicted upon any person subject to this code. The use of irons, single or double, except for the purpose of safe custody, is prohibited.
Source: SL 2012, ch 175, § 142.