Boyfriend filmed woman changing, then lost mobile A man was jailed yesterday for trying to extort HK$50,000 from a television artist for the return of a mobile phone containing a nude video clip of her. The District Court heard Kwok Kam-shing, 41, threatened to sell the clip to the media unless the 24-year-old artist, who was identified only as Miss A, paid him. Prosecutor Catherine Cheung said the clip was taken by the artist's boyfriend, who later lost the phone in a taxi. Kwok, who pleaded guilty to theft and blackmail, was sentenced to 28 months for what Deputy Judge Douglas Yau Tak-hong termed a serious offence. He was caught after an undercover agent, posing as Miss A's assistant, gave him HK$50,000 in marked notes at a meeting in a hotel on June 5. Ms Cheung said the boyfriend, referred to as Mr B, had filmed Miss A topless as she changed her clothes at his home on May 13. The clip, lasting about 10 seconds, was stored in the memory of his phone, which he left in a taxi five days later. On June 2, Miss A received a text message from Kwok, describing himself as 'Mr Lam', and telling her to call him if she wanted the mobile phone back. She called police. Senior Inspector Lam Man-han, posing as Miss A's assistant, arranged with Kwok to meet her in the coffee shop of the Hotel Nikko, Tsim Sha Tsui, on June 5 to make the deal. They met at the coffee shop at 8pm and Senior Inspector Lam handed him HK$50,000 in marked money in return for Mr B's mobile phone. Kwok was then arrested as he left the coffee shop. A search of Kwok's home in Tsing Yi revealed he had copied the contact list of Mr B's mobile phone onto a piece of paper and the video clip to one of his mobile phones. Ms Cheung said Kwok had admitted showing the clip to his friends and the copy he made to another mobile phone was for his future viewing. During Sentencing, Judge Yau said abusing information found stored in mobile phones should be discouraged, noting that the offences were serious. 'I reckon there is a real risk that the copy found [in Kwok's mobile phone] may not be the only copy and Kwok may not be the only one who possesses the clip.'