You could have downloaded Logitech Pocket Digital 5.2 for Mac from our application library for free.
From the developer:
Logitech Pocket Digital contains drivers for the credit cardsize digital camera.
You may want to check out more Mac applications, such as Logitech Camera Settings, Logitech Control Center for Macintosh® OS X or Logitech Broadcaster, which might be similar to Logitech Pocket Digital.
Device Assistants
Drivers