A bidirectional electrostatic discharge protection device includes a substrate having a topside semiconductor surface that includes a first silicon controlled rectifier and a second SCR formed therein including a patterned p-buried layer including a plurality of PBL regions. The results of the stability analysis are at least one stable region and at least one unstable region of the DC transfer curve. A reference plane is defined for each of the plurality of sites. As a result, airline personnel using the airline management system may more effectively and efficiently access and manage customer data required to provide airline services. A local storage holds history information including a media ID and the content ID assigned to the original AOB.