Has anyone tried biofeedback software?

I'm wondering if biofeedback can be done on one's own to any great effect. This would be for encouraging calmness and focus, and for notice what things throw those off. I remarkably imagined some kind of wearable item that would at least possible tell you your pulse and perchance body temperature. I know for a certainty that there is some software out within but don't know if it's accurate/useful.
I'd imagine close to meditation it's only adjectives if practiced regularly.
Anyone have any opinions/advice?Has anyone tried biofeedback software?
I enjoy not use any bio-feedback software but have done a bio-feedback session.
You can find out more information more or less Biofeedback and Neurofeedback at www.eeginfo.com
There's also a really cool video on You Tube.
What is Neurofeedback:
http://www.youtube.com/watch?v=t6xecwfqr...
What is Neurofeedback FAQ:
http://www.eeginfo.com/info_what.htm...