The body is composed of 7 or more trillion cells. Each cellular unit communicates with itself, with nearby cells and even with cells very distant from it. This communication is composed of electro-chemical signals among other modalities (ie. biophotons and chemical messengers). The language of cell-talk is infinitely complex; far more so than human language, but part of the purpose is the same: to pass along essential information to allow coordination of action and purpose among collaborating units. The meridians are communication pathways for the electrochemical messages of cell-talk. Since optimized homeostasis is essential to life and good health, the signals (among other data) communicate any and every deviation from the ideal equilibrium, however small. Besanna captures this information electronically. Then Besanna analyses and interprets the data to permit corrective action by the scanner user.