Around four million poor people in Indonesia do not receive any government support because they lack proper identification papers. The Indonesian government calls them "invisible people".
Many are poor farmers who migrate to the cities in search of a better living. Without a proper address or formal job, however, they cannot acquire the KTP Indonesian identity card.
A KTP card allows them to get free schooling for their children, free medical services and enrollment in state poverty eradication programmes.
Without this piece of paper, they have little choice but to scrap out a living from other people's trash.
Al Jazeera's Step Vaessen reports from Jakarta.