A Taiwan court sentenced the man to five months after finding that secretly recording his wife violated her sexual privacy rights.
TAOYUAN, Taiwan — A Taiwanese man who used a camera-equipped robot vacuum to record evidence of his wife’s affair won damages in a civil case but was later sentenced to five months in prison for making the intimate recording without her consent, according to court reporting in Taiwan.
The unusual case centered on competing rights within a marriage and whether suspicions of infidelity justified secretly recording a spouse in a private home. The Taoyuan District Court concluded they did not. Local reports said the man was convicted of unlawfully recording another person’s sexual images and received a five-month sentence that may be converted to a NT$150,000 fine. The ruling can be appealed. The identities of the husband, his wife and the other man have not been publicly disclosed.
The couple married in 2021 and generally lived with the husband’s parents while also using a holiday home in Guishan, a district of Taoyuan, according to reports describing the court proceedings. In September 2023, the husband became suspicious after finding a used toothbrush and other belongings at the holiday property that he believed belonged to another man. He then reviewed surveillance footage from the building’s parking area and saw an unfamiliar man who had driven his wife to the property.
On Dec. 24, 2023, the husband remotely activated a robot vacuum inside the home through a mobile application. He told the court that he initially intended to use the device’s communication feature to speak with his wife. When the vacuum’s live camera showed another man inside the residence, he activated its recording function. The footage captured private interactions between his wife and the other man, including images that the criminal court later treated as protected sexual images.
The husband used the recordings in a civil lawsuit accusing his wife and the other man of violating his marital rights. He sought NT$2 million in damages. A civil court concluded that the relationship between the two had exceeded the boundaries of an ordinary friendship and ordered them to jointly pay the husband NT$500,000. The recordings therefore helped support the husband’s successful civil claim.
The wife then filed a criminal complaint over the way her husband had obtained the footage. The husband acknowledged making the recordings but argued that he had been gathering evidence for the affair case. Reports on the ruling said he also pointed to lights or audio notifications from the robot vacuum as indications that the device was operating.
The Taoyuan District Court rejected that defense. It found there was no evidence showing that the wife knew she was being recorded or had agreed to the recording. The court also determined that a spouse’s duty of fidelity did not eliminate an individual’s reasonable expectation of privacy. Even when a person is trying to prove an affair, the court said, evidence should be obtained through methods that cause the least possible intrusion into another person’s privacy.
The criminal case also produced an important distinction from the earlier civil ruling. Evidence may help establish a claim in one proceeding without making the method used to obtain it lawful in a separate criminal case. In this case, the footage supported the husband’s civil claim against his wife and the other man, but the criminal court separately examined whether he had a legal right to create the recording in the first place.
Local reports said the court convicted the husband under Taiwan’s laws protecting sexual privacy from unauthorized recording. He was sentenced to five months in prison, with the option of converting the sentence to a fine calculated at NT$1,000 per day, for a total of NT$150,000. Some international reports described the man as having been jailed, but Taiwanese reporting on the judgment indicates that the sentence is convertible to a fine and that the decision remains subject to appeal.
The case attracted international attention after Taiwanese media reported the ruling in August and highlighted the unlikely role of a household cleaning device in both legal cases. Smart robot vacuums can include cameras, microphones, mobile applications and remote-control functions, but the court’s decision focused on the conduct of the person operating the device and the wife’s expectation of privacy rather than on the technology itself.
As of Sept. 3, the five-month criminal sentence was not reported as a final, unappealable judgment. The husband retained the ability to appeal, and reports on the ruling said the sentence could be converted to a NT$150,000 fine rather than served in custody. The NT$500,000 civil damages award and the separate privacy conviction illustrate how the same recording became central to two cases that reached different legal conclusions.
Author note: Last updated September 3, 2026.