Amid anger over "spycam porn," authorities in Seoul have pledged to conduct daily checks in public toilets, but campaigners on Monday called for stronger regulations on hidden cameras commonly used to target women.

The Seoul city government announced that the number of workers tasked to uncover hidden cameras at the city's 20,554 public toilets would be boosted from 50 to 8,000, South Korea's Yonhap news agency reported.

Campaigners have raised doubts that the latest move will be effective in curbing the crime, arguing that it is more crucial to overhaul both the law on hidden cameras and attitudes toward women.