Okay - this is from him:
Basically, it was developed by a heart/lung surgeon out of Florida who spent 20 years developing/researching it. He started as a research scientist out of the University of Michigan. As a heart surgeon, he recognized obesity as one of the worst problems in health care today and developed the product to help combat obesity.
For years in elite atheles physiologists have been able to measure their resting metabolic rate. It was hugely complicated and called the “Douglas Bag Technique”. There was a formula developed about 70 years ago that would approximate your RMR based around a number of factors, wt, age, sex etc. The Douglas bag technique was very accurate, but the formula technique was found to provide similar RMR for people, but in reality they would have a VERY wide variation between people with formula calculated RMR’s.
The MAchine basically measures your RMR. It’s been studied to be statistically equal to the “Douglas Bag Technique”, the gold standard in this measurement field.
The principal is that if you know what your RMR is, it calculates your total caloric needs at rest. If you construct a diet knowing this, then any energy needs that you have above and beyond that must be found. The ready source of that is your fat stores.
So get the reading. Buy the “Balance Log” which is a very user friendly disc with 4000 food types on it all with calories worked out.
Right now I’ve done it with about 20 people. I’d love to tell you that they have lost X number of pounds, but as I haven’t done any tracking at this time, I can’t tell you that.
Having a Physiology background, it in theory is great.
As a final not, if you want to lose weight, EAT LESS. Weight loss is al about calories in and calories out. It’s simple in theory, but hard in reality. If any thing the readings and the balance log will educate you on the calories in your foods. It takes me 40 minutes on a treaddmill to burn off the snickers it took mo 2 minuters to eat.
Finally, these comments are mine, not my wifes, so if they aren’t great, don’t blame her. 
MC