<?xml version="1.0" encoding="UTF-8"?> <deviceinfo version="0.2"> <device> <match key="info.capabilities" contains="input"> <append key="info.capabilities" type="strlist">access_control</append> <merge key="access_control.type" type="string">sound</merge> <merge key="access_control.file" type="copy_property">linux.device_file</merge> </match> </device> </deviceinfo>