For Mac you can use Horae: https://macdownload.informer.com/horae/
For Windows you can use MIDI-OX: http://www.midiox.com/
Choose View -> MTC Transport Panel.
In this panel you can start, stop, pause and edit your timecode.
The timecode can be routed to any MIDI port that is recognized by the program. All Lockit devices will automatically appear as MIDI interface when they are hooked up to the computer via USB.