Charleston City Council Tuesday gave final approval to allow the Charleston Police Department to apply for a $30,000 grant from the U.S. Department of Justice to purchase body cameras.

Charleston Police Chief Greg Mullen said if the grant is approved, he would use it to purchase 21 body cameras.

Officers clip the devices to their shirts in the center of their chests. They are more effective than dashboard-mounted cameras because they move with the officer and record everything in front of him or her.

The American Civil Liberties Association has raised concerns about such cameras, especially about how they will be used in homes or other private places.

Mullen has said he thinks that five years from now, a body camera will be a standard item issued to police officers.