How A ZYTO Scan Works
ZYTO technology relies upon an array of biocommunication principles and concepts that provide users with deeper insight and information when making decisions related to health and wellness


The ZYTO bioscan relies on galvanic skin response (GSR)—technology that measures fluctuations in electrical skin response. One familiar application of GSR is lie detector testing.
*Your skin is electric
*A measurable reaction
*The autonomic nervous system
The autonomic nervous system regulates a wide range of bodily functions, including:
  • Heart rate
  • Respiratory rate
  • Digestion
  • Waste elimination
  • Fight-or-flight response
  • Blood pressure
  • Electrolyte balance
  • Sexual response
  • Body temperature


The ZYTO Hand Cradle measures the user’s galvanic skin response and sends that data directly to the ZYTO software for analysis. The GSR data is correlated and compared with Virtual Items in the software database.

Based on nearly two centuries of scientific research
ZYTO Hand Cradle technology is based on established scientific principles that date back to 1849, when physician and physiologist Emil du Bois-Reymond discovered that skin was electrically active. In 1879, Dubois-Reymond’s work was advanced further when French neurologist Charles Fere found that skin resistance could change based on emotional stimulation.  Now, over 150 years later, electrodermal activity (EDA), a term now used synonymously with galvanic skin response (GSR), has been the subject of hundreds of professional publications.  Those who may be skeptical that a device can accurately measure GSR need only look at the scientific studies contained in many of these publications to find that the technology is anything but pseudoscience.

Fast, easy scanning
With the ability to scan more than 100 Virtual Items per minute, the Hand Cradle is fast in addition to being accurate. That speed allows you to perform a simple product library scan in a matter of minutes. Establishing and maintaining a connection with the Hand Cradle is easy as well, as the finger and palm pads will typically register skin contact with just a small amount of pressure.  For those who may have trouble establishing a connection with the Hand Cradle, we’ve created a video with some simple tips to get connected.
Designed for accuracy
In addition to being aesthetically pleasing, the Hand Cradle is designed for maximum functionality and accuracy. The fact that it has 6 different points of contact separates it from other electrodermal and GSR devices, many of which only have 2 contact points.  Along with the advantage of gathering GSR data from multiple contacts, each contact point is also large enough to connect to several points on the skin.  With more contact points covering a larger surface area, the Hand Cradle is able to provide a consistently high level of accuracy that’s unmatched in the industry.


ZYTO’s proprietary software analyzes GSR data for patterns of coherence—looking for the ways your GSR readings fluctuate or shift in response to each Virtual Item.
o it.
The ZYTO Balance combines top product preferences with key body and lifestyle data from 190+ biomarkers to help you make better wellness decisions faster. 
The robust reports combined with the ability to scan clients remotely make the Balance a highly effective turn-key solution for anyone looking to improve client satisfaction and expand their business. 


Each Virtual Item represents a different physical item. Every time the software introduces a Virtual Item, a corresponding GSR reading is taken by the Hand Cradle. Each new response is measured and tracked in comparison to the GSR baseline reading.

While tracking the GSR data in comparison with each Virtual Item, ZYTO software assigns each Virtual Item a positive or negative value based on the coherence patterns. Positive values indicate Virtual Items that the body is biologically coherent with.

Video Transcription – What Are Stressor and Balancer Virtual Items?
Have you ever looked at a ZYTO report and wondered, “What?” That’s not an uncommon response when you see so much data. Look, if you want to de-mystify ZYTO reports and review the data like a pro, then I’ve got just the tip for you today.
ZYTO software programs contain massive libraries of Virtual Items. When choosing items, sometimes we want to scan them as stressor Virtual Items, and other times we want to use them as balancer Virtual Items. When we scan an item as a stressor, we’re in essence asking the body, “Is your response to this item in range, or out of range?”
Now range is a value calculated at the beginning of each ZYTO session that helps us determine what to pay particular attention to. Dr. Cook likes to think of range in terms of it being your energetic threshold. So let’s have a quick math lesson. Now don’t worry, there isn’t a quiz and you can watch this as many times as you want.
Remember the algebra term absolute value? It simply means that we’ll look at the size of the number regardless of its sign. This is the case with range. So if we plot range on a number line like this, it will extend out equally in both directions; we’re not concerned about positive or negative.

In this particular report, our range extends between 6.74 and negative 6.74. Now that we have range, we can start measuring and plotting the stressor responses in relation to the range. Any that fall outside of that range will be the ones that we’re interested in whether positive or negative.
So, as we look at this report, we see that the circulatory system Virtual Item dR value is positive 20.98, and the respiratory system Virtual Item measured at a negative 16.35 dR. Although one is positive and the other dR value is negative, both are considered out of range. In other words, the absolute value is greater than our range of 6.74.


An easy-to-read report is generated that displays a ranking of the Virtual Items that resulted in greater biological coherence. The report can then be used to assist individuals as they make choices to maintain overall health and wellness. We call this whole process biocommunication.

Just like a flight simulator allows a pilot to see how they may respond to various situations, ZYTO provides information as to how the body may respond to various “situations” or stimuli. These signals are generated using ZYTO software. We call these Virtual Items. Some of these Virtual Items may include Chemicals Viruses Nutritional Supplements The body is able to respond to the Virtual Item in less than one second. Responses are gathered and displayed in reports. When paired with other tests and methods, these reports assist wellness professionals and their clients in making individualized wellness decisions.
When the parts and pieces of a system work in harmony with one another, we call this coherence. The greater a system’s coherence, oftentimes the greater its efficiency. Measuring this signal of cooperation, or the lack thereof, provides understanding about what may increase or decrease efficiency.  When the body’s energetic coherence increases after a Virtual Item is introduced, the item is given a positive score. If the body’s energetic coherence decreases, the item is given a negative score.

Determine Range
Each ZYTO scan begins by measuring the body’s responses to 35 neutral digital signals. The median response to this neutral stimulus becomes the range, or the parameter of the body’s response to energetic stimulus in general. Once the range is established, the software introduces specific Virtual Items and compares the response to the parameters set in the range.

Evaluate Dynamic Baseline
Your body’s energetic state is constantly changing. For this reason, we measure its coherence before each stimulus is introduced.

 What We Measure
Just like a doctor uses a stethoscope to listen to a child’s breathing, ZYTO “listens” to the body’s subtle galvanic skin response using the ZYTO Hand Cradle. Through this connection, biocommunication can occur.

The process of measuring responses as various Virtual Items are introduced to the body includes the following steps.
Send Stimulus
The Virtual Item is a unique digital code representing an actual item—a food, product, service, organ, body system, etc. Just like a flight simulator mimics flying in real life, these items represent “situations” the body may respond to.
Measure Response
The degree of coherence to which your body responds to a Virtual Item is measured using galvanic skin response, or GSR.

Calculated Deviation Ratio
The difference between the response and the baseline is calculated. The resulting calculation is the dR, or deviation ratio: A positive number dR is assigned when the response was more coherent than the baseline, indicating biological coherence.  A negative number is assigned to a less coherent response, indicating biological aversion.A 0 dR means the response was the same as its baseline reading, indicating a neutral response.
Plot Data

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