The present invention provides for a method of preparing a nutraceutical formulation comprising the step of solvent extraction from the root of Zingiber zerumbet Sm, and the use of this formulation to regulate the immune system, and more specifically to prevent or to treat an allergic disorder. A touch screen assembly consisting of a display mechanism and optical sensor mechanism are enclosed within a single piece cover. A separate security unit comprises a private unlock key and cryptography logic configured to use the private unlock key to sign a portion of data, thereby generating a signed unlock file for supply to a storage location. The edge of the printed circuit board may be enclosed with a material.