This app allows you to keep time and score in fencing bouts, it also adds the capability of connecting via Bluetooth 4.0 to a BlackBox 2.0 scoring machine.You can modify the time accurately up to the millisecond level.In order to connect to a BlackBox 2.0, click the Connect to BB (BB=BlackBox), select a previously paired BlackBox device and connect. Once connected, the time automatically stop when a touch occurs, and when the time is off the machine wont allow any other touches happening after the time-off event.blackboxfencing.wixsite.com/blackbox