Biofeedback is a tool that helps individuals visualize how their biological systems work. For example, software can show individuals what their heart is doing and how basic changes in their breathing can influence their heart beat and overall health.
Soft copy means a data or information which can be stored in any kind of digital memory. It is an intangible form of preserving the material. You can see the record but cannot touch it. Monitors or others display screens are used to see the soft copy results.
The term hard copy predates the age of the digital computer. In the process of producing printed books and newspapers, hard copy refers to a manuscript or typewritten document that has been edited and proofread, and is ready for typesetting, or being read on-air in a radio or television broadcast.