$GTCH joint venture, GBT Tokenize Corp. (“GBT/Tokenize”), started research for advanced oxygen and heart rate systems for its qTerm medical device. The current qTerm oximeter is an optical based sensor system that measures the heart rate and oxygen levels, utilizing an electronic processor and a set of small light-emitting diodes (LEDs). The system uses light sources (LEDs) and a light detector to measure the variation in blood volume in tissues. The variation in the blood volume is used to determine the heart rate and the oxygen levels are measured based on blood cells color. Human blood appears red because of a protein called hemoglobin which contains a red-colored compound for carrying oxygen through the bloodstream.

With a touch of a finger, beams of light measure the amount of oxygen in your blood by analyzing the color and movement of blood cells. Dark red blood cells indicate a lack of oxygen, while bright red blood cells indicate higher oxygen level. For example, if 96% of the blood cells are bright red, while 4% are dark red, then the Sp02 (Oxygen) level would be 96%. When a finger is placed on the qTerm device, a light source emits intense light. A light detector detects the light that passed through the finger, measuring how much was absorbed. A computer program performs an accurate calculation to produce numerical results. One of the main advantages of pulse and oxygen oximetry is the fact that it is a painless and noninvasive method.