EDI Alamsyah waves from behind the window in his Proton sedan, flashing a grin at Indonesian immigration officers while passing into Malaysia.

The Indonesian national was taking Tempo from Entikong, West Kalimantan, to Tebedu District, Sarawak. "We've got to know the tricks," said the 45-year-old man in mid May.

Entikong District in Senggau Regency borders Malaysia and is a main trade route between the two countries. According to Edi, who has been cro