A system and method for providing secure communications between remote computing devices and servers. During the method, the apparatus may calculate statistical relationships corresponding to a pattern of occurrence of the trait in a group of life forms and patterns of occurrence of compound variables in a set of biological variables of the group of life forms. Subsequently, a difference \u0394T between any closest two of the detected temperatures is obtained in S4, and then compared with a preset limit value \u03b3 in S5, when \u0394T exceeds the limit value \u03b3, temperature sensors in a corresponding attachment area are determined abnormal in S6, and an alarm is displayed.