Using some softwares you can change your web camera as spy or Surveillance camera.  here i give you some  softwares links.



Rise Sun(Complete  Free Software)

• Adjustable Motion Detection Sensitivity
• Adjustable Webcam Performance
• Automatically takes a snapshot when movement is detected
• Automatically logs a record when movement is detected
• Automatically sounds an audible alarm when movement is detected
• Automatically displays a silent message when movement is detected

Screen Shots:


Download:


TeboWeb(Freeware)

• Set the sensitivity of movement detection.
• Detection motion within or outside a specified area .
• Receive emails with images of any movement detected.
• Publish movement images to your website.
• Publish webcam images at regular intervals.
• Timestamp your images (choice of colours and position within image)
• Graph of movement over time (with calendar facility).
• Start movement detection at a specified time.
• Command line startup options.
• Save your individual settings to different profiles.
• Receive notification of new versions as they become available.
• New versions autoinstall on one mouseclick(so you only need to install TeboCam once).    

Screen Shots:


Download: