A man in Taoyuan, Taiwan, who used a robot vacuum’s camera to record his wife with another man won NT$500,000 in a civil case over the affair and then received a five-month prison sentence for making the recording. The Taoyuan District Court found he had no lawful reason to capture her naked image inside their holiday home, even though the same video helped him prove the relationship had gone beyond ordinary friendship.
The couple married in 2021 and lived with the husband’s parents. They used a vacation house in Guishan mainly on holidays. In September 2023 the husband found a used toothbrush and other men’s items at the property. Parking-garage footage showed an unfamiliar man driving his wife there and staying overnight.
On Dec. 24, 2023, he opened the vacuum’s mobile app, saying he meant to talk to her through the device’s speaker. The live feed showed another man in the house. He then pressed record. The video captured the pair embracing, changing clothes in front of each other, and the wife walking naked while the man lay on the sofa as if he lived there.
He sued his wife and the other man for infringement of spousal rights and asked for NT$2 million. The civil court accepted the footage, ruled the relationship exceeded friendship, and ordered the two of them to pay him NT$500,000, about $16,000. That award did not close the case.
The wife filed a criminal complaint under Taiwan’s law against recording another person’s sexual images without cause. The husband admitted using the vacuum but said he acted only to gather evidence for court. Civil judges had already treated the video as necessary proof, he argued, and the machine gives a voice or light alert when it records.
The criminal court rejected that. Judges said a spouse’s duty of loyalty does not cancel the other person’s right to privacy inside a home. Family life can narrow that right, they wrote, but it does not erase it. Suspicion of an affair is not a free pass to record someone undressed. The alert on the vacuum was not enough to show the wife knew she was being filmed or agreed to it. He turned recording on after he saw the other man, so the capture was deliberate.
The court convicted him of unlawfully recording another person’s sexual images and sentenced him to five months. He can convert the term to a NT$150,000 fine at NT$1,000 a day, and he can appeal. The maximum for the offense is three years and a NT$300,000 fine.
Local reports, including Liberty Times and China Times, identify the parties only by role. Some coverage uses the alias Ali for the husband. The holiday home sits in Guishan District, Taoyuan. The criminal ruling became public in mid-August 2026.
Taiwan decriminalized adultery years ago. Spouses can still sue for money when an affair is treated as a civil wrong against marital rights. That path is what produced the NT$500,000 award. The criminal case turned on how the proof was obtained, not on whether the affair happened.
The husband told the court the vacuum already sat in a shared house and that he needed the images because hidden affairs are hard to prove. Judges answered that the least-intrusive method still has to be used, and recording a naked body crossed that line. Privacy, they said, sits higher than the interest in proving a spouse cheated.
The sentence can be paid off in cash. The civil payout is larger than the criminal fine. The case is still open to appeal. None of the three people has been publicly named.
