Periscope is the next generation of web cam software that lets you useyour iSight to capture activity in front of your Mac's camera and thensave or share that image simply and automatically. - 'scope your home when you're out of town. - 'scope for intruders with motion detection. - 'scope the kids when you're at the office. - 'scope a time-lapse movie of your workday. - 'scope for security. - 'scope for fun!