MELISSIANA Kriswandi, affectionately known as Meli, raps on the glass window to greet Kiswo, an administrative employee busy at the computer. The man raises his thumb and smiles. "He used to work with Trans Nasional," said Meli on her visit to the Group 4 Securicor Indonesia office (G4S) in Jakarta on Monday last week.

Trans Nasional, Kiswo's previous employer, was a competitor of G4S. That is, until eight years ago, when G4S acquired the business, i