If you happen to be looking for lunch bargains in the posh residential area of Kowloon Tong, you will have one fewer option next week. From Monday, security guards will be stationed at entrances to City University's enormously popular canteen, City Express. The guards will check the identity of patrons during lunchtime - from 11.30am to 2.30pm. Those who fail to present their CityU identity card, no matter whether they are students or staff, will not be allowed into the canteen. According to a notice distributed to students and staff, guests will be allowed to dine in the canteen only if accompanied by students or staff members. The move aims to protect the privileges of students and staff at City University. One student at the university pointed out that this was probably because many outsiders have been using the subsidised canteen for lunch. 'Now we have to show our cards if we want to access the HK$15 char siu fan [BBQ pork rice] or the HK$12 chicken curry,' the student said. But Lo Down wonders to what extent the new measure will hurt the takings of the canteen operator. City Express is the largest food outlet at CityU. It offers breakfast, lunch, afternoon tea, dinner and snacks. Western and Asian foods are served.