The paper indicates that GiveDirectly did pilot this algorithm in 2014 but does not seem to have numbers on an accuracy increase/decrease and assigns a probable increase to consistency and elimination of human error.
We use a rigorous audit process. 100% of the households we enroll are audited by a second field team that operates completely independently from the team responsible for enrollment. Senior staff audit a smaller proportion of recipients. We also call our recipients after sending them money to learn more about their experiences. To date, 1% of recipients called report paying a bribe to a village official, and less than 1% report paying a bribe to a mobile money agent.
The use of this data to target communities for foreign aid is touched on in passing.
For everything else, there's Watsi.