A systems analyst mounted spy cameras disguised as coat hooks in fitting rooms at a clothing outlet to film women undressing.
When Zheng Zhongshi returned hours later to retrieve them at Cotton On in Plaza Singapura, he found them missing.
Using his position at IT company NCS - where he was working on a maintenance project dealing with the police database - he made unauthorised searches at the Police Cantonment Complex to find out what had happened to them. He eventually discovered that a police report had been lodged and came clean.
Yesterday, the 34-year-old was jailed for 20 weeks after admitting to 10 of 55 charges of insulting the modesty of women and for unauthorised access to a computer.
A district court heard earlier that Zheng bought two cameras disguised as coat hooks for $98 each on Sept 11 last year.
Two days later, he mounted them in two separate fitting rooms in the Cotton On outlet at White Sands shopping mall. He removed the cameras about an hour later.
On Sept 15, he went to the Plaza Singapura store and planted the cameras in two fitting rooms. But the staff found and removed them, and lodged a police report. When Zheng returned that evening, he found the cameras missing. He later reported for work and conducted 46 unauthorised searches for information on his missing cameras.
District Judge Lim Tse Haw said: "You could have recorded the intimate moments of shoppers in a state of undress on unlimited occasions. This is in contrast to the usual upskirt offence, where there is only one upskirt photo or video."
Zheng could have been jailed for up to a year and/or fined for each charge of insulting the modesty of a woman.