Magnetic tracking system

• Widely used
• Inexpensive and readily available
• Limited range of operation

• Good accuracy, responsiveness and registration
• Time-of-flight
• Suffer from acoustic noise
• Phase coherent
• Higher data rate => better performance
• Suffer from cumulative error

Mechanical tracking system

• Good accuracy, responsiveness and registration
• Easy to integrate force feedback
• Limited range of operation
• Do not allow multiple users to work in the same working space

• Fixed transducer, pattern recognition
• Trade off between accuracy and range of operation