A new study has found that the push to force police officers to wear body cameras to make them more accountable shows that they improve the behavior of police officers — and the people they interact with as well.

With the proliferation of smart phones, more and more recordings of police behavior are shedding light on controversial cop actions, and police are trying to get into the game themselves by having body cameras monitor their every move — a move that has federal support as the U.S. Justice Department announced this week that it would provide $20 million to local police departments as part of a $75 million program by the Obama Administration that Congress has signed off on.

President Obama believes body cameras will help police officers not only improve accountability, but also prevent misconduct by officers, and a recent study indicated that officers behave better while wearing them.

Several local police departments have started using the technology, including in Ferguson, Mo., after the controversial death of Michael Brown that led to nationwide protests that have caught steam with other deaths, including Eric Garner in New York and Freddie Gray recently in Baltimore.