With apps fuelling paranoia, snooping on children and spouses becomes de rigeur.
Lim Yong Yi is a human lie detector. Lim took the helm of his family's private investigation and security firm five years ago, and, looking for an advantage in the city-state's competitive market for PIs, invested in training on how to read facial micro-expressions. The science was pioneered by the American psychologist Paul Ekman and used`, sometimes controversially, by law enforcement and intelligence agencies worldwide.