The spectators guidelines list 'flags with or without pole' as one of the prohibited items.
Lusofonia Games scheduled in January next year will have 1500 athletes and team members from 12 countries participating in the 12-day event.
The list of forbidden items also includes coins, bottles, eatables, laser lights, motorbike helmet and other 40 odd items including musical instruments and electronic equipment that could interfere with electronic signal of the Games at the venues.
The organisers said the guidelines are prepared by the special cell of Goa police in association with the Local Organising Committee of Lusofonia Games keeping in mind the international sports protocol and also the local conditions.
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All venues have a security screening process which includes metal detection - Door Frame Metal Detectors (DFMDs) and X-ray scanners.
"Let the security staff know if for any medical reasons (such as a pacemaker) you are not comfortable undergoing metal detection," reads the guide.
Among the do's and don'ts for spectators are waiting in a queue, maintaining decorum at the venue, appropriate dressing according to weather conditions.
The games would be held at six different venues across Goa including Pandit Jawaharlal Nehru stadium in South district where much awaited football matches would be held between participating nations.