A systems technician was jailed for nine months on Monday for taking upskirt videos of women at various places including Resorts World Sentosa.

Dominic Chia Hooi Chuan, 26, who worked at RWS, had admitted to nine counts of insulting the modesty of women and one charge of having obscene films in his smartphone at his flat in Elias Road.

Eighty-five other charges of insulting modesty were taken into consideration.

The court heard that he had been taking upskirt videos of women at RWS, VivoCity and White Sands since 2011.

Once he spotted a female whom he felt was good-looking, he would follow her onto an escalator. While on the escalator, he would place his phone on his thigh, propping it up by stepping onto the next step of the escalator.

Deputy Public Prosecutor Paul Wong said Chia was caught on May 23 last year by a member of the public for taking upskirt videos of a 13-year-old girl's inner thighs and underwear at VivoCity.

When his phone was checked, a substantial number of photos and videos of women's inner thighs and underwear were found. Police raided his home and seized a laptop . Ten other similar videos were found in his iPhone. His victims could not be identified in eight of the videos.

In passing sentence,District Judge Christopher Goh noted that such offences were on the rise, and that Chia had committed the offences over a span of three years.

Chia could have been jailed for up to one year and/or fined on each charge of insulting the modesty a woman.