South Dakota Smart Glasses Recording Laws: One-Party Guide

Yes, smart glasses are legal to own and wear in South Dakota, but recording with them carries legal responsibilities tied to the state's one-party consent rule. Under S.D. Codified Laws § 23A-35A-20, any party to a conversation may record it without notifying the other participants. Recording in private spaces where people expect visual privacy is a separate criminal offense regardless of consent.

Are Smart Glasses Legal to Own and Wear in South Dakota?

Yes. South Dakota has no statute that restricts owning, purchasing, or wearing smart glasses such as Meta Ray-Ban AI glasses. The device is freely available throughout the state and its mere possession raises no legal issue under South Dakota or federal law.

The legal analysis begins only when the glasses are used to capture audio or video. The outcome depends on the content being recorded, the location, your role in any conversation being captured, and the purpose of the recording.

Recording Video in Public vs. Private Spaces

Public spaces

Recording video in a public space is lawful in South Dakota under both state and federal law. When a person is in a publicly accessible location (on a street, sidewalk, in a park, at a sporting event, or in a government building open to the public) they have a diminished reasonable expectation of privacy from being seen or filmed. The federal Wiretap Act's definition of an "oral communication" under 18 U.S.C. § 2510(2) covers only communications uttered under circumstances that justify a reasonable expectation against interception. Silent video capture in public does not trigger the federal statute, and South Dakota law follows the same principle.

Smart glasses worn at an outdoor festival in Sioux Falls, on the campus of South Dakota State University, along the trails of Custer State Park, or at a public legislative hearing generally create no legal exposure from video capture alone, provided the wearer is not recording in a way designed to capture intimate areas.

Semi-public and private spaces

The legal picture shifts in semi-public or fully private spaces. A private home, a hotel room, a medical office, or a closed conference room carries a strong reasonable expectation of privacy. Even spaces that are technically accessible to others, such as a workplace break room during a quiet one-on-one conversation or a restaurant booth during a personal discussion, can give rise to a reasonable expectation of privacy in the content of spoken words exchanged there.

Under Katz v. United States, 389 U.S. 347 (1967), the constitutional test for a reasonable expectation of privacy requires both a subjective expectation of privacy and one that society recognizes as objectively reasonable. Courts apply this framework when determining whether a location or communication qualifies as private under wiretap and voyeurism statutes.

Recording in private places

SDCL § 22-21-1 criminalizes surreptitiously trespassing on premises to surveil another person or installing unauthorized recording devices in private places without consent. Using smart glasses to secretly observe or video-record someone inside their home, in a locked office, or in any space where they have reasonably closed themselves off from observation directly implicates this statute alongside the wiretap prohibition.

Recording Audio and South Dakota's One-Party Consent Rule

This is the load-bearing legal issue for smart glasses users in South Dakota.

The statute: SDCL § 23A-35A-20

South Dakota Codified Laws § 23A-35A-20 is the state's wiretap and interception statute. It prohibits the intentional interception of wire, oral, or electronic communications by persons who are not a sender, a receiver, or a person otherwise present at the communication. The one-party consent framework flows from that exclusion: any party to a conversation is expressly permitted to record it without the knowledge or consent of the other participants.

In practice, a person wearing smart glasses who is part of a conversation (an employee speaking with a supervisor, a consumer dealing with a business representative, a person having an in-person discussion with a neighbor) may lawfully record that conversation in South Dakota without disclosing the recording to the other participants, because they are a party to the communication.

The statute applies to in-person conversations, telephone calls, and electronic communications alike. The dual-capture capability of smart glasses (simultaneous audio and video) means the wiretap analysis applies to the audio component whenever voices are being captured.

What one-party consent does not cover

The one-party consent rule has clear limits that smart glasses users must understand.

The exception applies only when the recorder is a genuine participant in the communication. It does not protect:

• Using smart glasses to capture a private conversation between two other people that the wearer is not part of.
• Secretly recording oral communications of others in a private space where the wearer has no legitimate reason to be present.
• Recording for any purpose that crosses into criminal conduct, such as using the footage to extort, stalk, or harass the person recorded.

Recording the private conversation of others without participating in it is an unlawful interception under § 23A-35A-20 and a Class 5 felony.

Practical application

For a smart glasses wearer in South Dakota, the one-party consent rule means:

• Recording a conversation you are actively having with another person (at work, at home, on the phone, or at a coffee shop) is lawful. You are a party. No disclosure is required.
• Recording the private conversation of two other people you are not involved in is unlawful and felony-level.
• Recording your own video content in a public space with no conversation being captured raises no consent issue at all.

For a complete analysis of South Dakota's consent framework, see the South Dakota Recording Laws page.

Where You Cannot Record: Voyeurism and Surveillance Statutes

Regardless of consent rules, South Dakota law absolutely prohibits recording in locations where a person has a reasonable expectation of privacy from visual observation of their body or intimate conduct.

SDCL § 22-21-1: Unlawful surveillance and trespass

Section 22-21-1 makes it a Class 1 misdemeanor to surreptitiously trespass onto premises to observe another person or to install any recording device in a private place without the consent of the persons who have a right to privacy there. A Class 1 misdemeanor in South Dakota carries up to one year in county jail and a fine of up to $2,000.

Smart glasses used to covertly record inside a private home, a locked office, or any other private place by entering without authorization directly implicate this statute. Separately, § 22-21-3 prohibits entering private property and peering in the door or window of any inhabited structure without lawful purpose, making observation through windows a Class 1 misdemeanor as well. The fact that the recording device looks like ordinary eyewear does not reduce the offense; the surreptitious nature of the surveillance is the core element, and glasses designed to appear like non-recording eyewear may actually reinforce that element.

SDCL § 22-21-4: Voyeuristic recording

Section 22-21-4 separately prohibits photographing or recording a person in a state of undress in any location where that person has a reasonable expectation of privacy, without that person's consent. The statute applies directly to restrooms, locker rooms, gym changing areas, fitting rooms, private residences, hotel rooms, and medical examination rooms.

A standard violation of § 22-21-4 is a Class 1 misdemeanor. The offense escalates to a Class 6 felony, carrying up to two years imprisonment and a fine of up to $4,000, when the victim is seventeen years of age or younger and the person committing the offense is at least twenty-one years of age. A Class 6 felony conviction in South Dakota also carries collateral consequences including sex-offender registration eligibility depending on prosecutorial charging decisions.

Federal floor

Federal law adds a parallel baseline: 18 U.S.C. § 1801, the Video Voyeurism Prevention Act, separately prohibits recording a person's private areas on federal property without consent where they have a reasonable expectation of privacy. On federal land (national parks, federal courthouses, military installations), this statute applies in addition to SDCL § 22-21-4.

The covert appearance of smart glasses

The covert appearance of smart glasses does not create any exception to the voyeurism or surveillance prohibitions. Devices that look like ordinary eyewear may heighten the evidence of intentional concealment, directly relevant to the "surreptitious" element of § 22-21-1 and the "without consent" element of § 22-21-4. Smart glasses that are used with the intent of avoiding detection while recording intimate or private matters face the strongest charging exposure under both statutes.

Facial Recognition and Biometric Privacy

South Dakota does not have a dedicated biometric privacy statute equivalent to Illinois's Biometric Information Privacy Act (BIPA), Texas's Capture or Use of Biometric Identifier Act (CUBI), or Washington's biometric identifier law (RCW Chapter 19.375).

As of June 2026, South Dakota has no law requiring written consent before capturing face geometry, no per-person statutory damages for unauthorized biometric scans, and no state-level biometric database enrollment restrictions. Using smart glasses with a facial recognition application in South Dakota does not expose a wearer to the same direct statutory-damages risk that exists in Illinois (up to $5,000 per person per violation under BIPA) or the same Attorney General enforcement posture that exists in Texas (up to $25,000 per violation under CUBI).

That does not mean South Dakota residents are without recourse. Common-law privacy torts, particularly intrusion upon seclusion under Restatement (Second) of Torts § 652B, apply regardless of any statute. An intentional intrusion upon someone's solitude or private affairs in a manner that would be highly offensive to a reasonable person creates civil liability even if no footage is ever shared. The act of covert recording itself is the intrusion, not the later publication of the footage.

The practical risk is greatest through third-party software integrations. Meta's Ray-Ban AI glasses provide a camera but do not natively run facial recognition. The legal exposure arises when a user pairs the glasses with a third-party reverse facial-recognition application. In October 2024, Harvard students demonstrated the "I-XRAY" system by pairing Meta Ray-Ban glasses with a facial-recognition search engine to identify strangers in real time and retrieve their home addresses and partial Social Security numbers within minutes. That demonstration used third-party software, not Meta's own systems. South Dakota users who build or use similar integrations face civil tort liability and, if the footage is used to stalk or harass, criminal exposure under South Dakota's stalking and harassment statutes.

If a South Dakota smart glasses user captures the face of a person who is a resident of Illinois, Texas, or Washington, those states' biometric laws may reach the conduct regardless of where the recording occurs. Consulting an attorney is warranted before any commercial deployment of facial recognition.

Penalties Summary

Offense	Statute	Classification	Maximum Penalty
Unlawful interception of oral, wire, or electronic communication	SDCL § 23A-35A-20	Class 5 felony	5 years imprisonment / $10,000 fine
Surreptitious surveillance / unauthorized recording device in private place	SDCL § 22-21-1	Class 1 misdemeanor	1 year jail / $2,000 fine
Window peeping on private property of another	SDCL § 22-21-3	Class 1 misdemeanor	1 year jail / $2,000 fine
Voyeuristic recording of a person in undress (adult victim)	SDCL § 22-21-4	Class 1 misdemeanor	1 year jail / $2,000 fine
Voyeuristic recording (victim 17 or younger, perpetrator 21 or older)	SDCL § 22-21-4	Class 6 felony	2 years imprisonment / $4,000 fine

Civil remedies for wiretap violations in South Dakota are available under federal law. Because South Dakota's own statute does not provide a private right of action, injured parties pursue claims under 18 U.S.C. § 2520, which provides statutory damages of the greater of $100 per day of violation or $10,000, plus any actual damages, the violator's profits, and attorney fees.

At the federal level, the Wiretap Act (18 U.S.C. § 2511) also independently imposes up to 5 years imprisonment for criminal violations, running parallel to South Dakota's Class 5 felony exposure for the same underlying conduct.

Practical Tips for Smart Glasses Users in South Dakota

Confirm you are a participant before recording audio. South Dakota's one-party consent rule protects only genuine participants in a conversation. If the other person is addressing you directly and you are exchanging words with them, you are a party and the rule applies. If you position the glasses to capture a nearby conversation that does not involve you, you are outside the exception and face felony exposure under § 23A-35A-20.

Keep the LED active. Meta's Ray-Ban AI glasses include a built-in white capture LED near the right frame that illuminates whenever the camera is actively recording video, taking a photo, or streaming live. South Dakota law does not currently mandate recording indicators for wearables, but deliberately covering the LED removes the only visible signal that recording is occurring. This strengthens evidence of non-consensual covert recording intent if a dispute arises. Meta's own guidance directs users to let the LED shine.

Disclose before sensitive meetings. South Dakota law does not require you to disclose recordings of conversations you are part of, but disclosing the recording at the outset of any formal or sensitive meeting (a job interview, a medical appointment, a legal consultation) eliminates any ambiguity about consent, avoids civil intrusion-upon-seclusion exposure entirely, and protects the admissibility of the recording if you later need to use it.

Never record in private spaces. The prohibitions under §§ 22-21-1 and 22-21-4 on surveillance and voyeuristic recording in private locations are absolute. Remove the glasses before entering locker rooms, restrooms, changing rooms, or any space where people have a reasonable expectation of privacy from visual observation. The felony-level penalty for recording minor victims makes accidental violations extremely consequential.

Watch for cross-border calls. South Dakota's one-party consent rule governs calls where both parties are in South Dakota. When either party to a call is in an all-party consent state, the stricter law of that state may apply. Minnesota, a bordering state, has nuanced recording rules; other regional neighbors like Nebraska and Iowa are one-party states. If you are in South Dakota but the other party is in an all-party consent state, that state's rule may govern. When in doubt, disclose or confirm the other party's location before recording.

Driving caution. No South Dakota statute as of June 2026 specifically addresses wearable display devices while driving. Navigation use through smart glasses is analogous to a mounted GPS unit. Using smart glasses for live streaming, social media posting, or video calls while driving raises the same distracted-driving exposure as any electronic device and remains legally unsettled.

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