The alley on Jalan Haji Nawi Raya, South Jakarta, felt deserted that afternoon. Two, five-meter-high walls running along the alley created an imposing silence. However, the scene was different after passing through an iron-bar gate set in the wall. After walking for about 100 meters, we came across the office of PT Sumber Cakung. One gets the impression that this company in the field of security printing is indeed well-hidden from sight.

The offic