1. A system for identifying an intruder, the system comprising: a security device comprising: a human presence detector operated to detect the presence of a human, a plurality of recognition mechanisms that include a camera, a microphone, a keypad, and a biometric sensor; and a computer operatively coupled to the security device over a network; the security device operated to detect the presence of a human, and to transmit a notification to the computer that a human has been detected; in response to receiving the notification, the computer operated to cause the security device to collect, and transmit to the computer, recognition mechanism information in accordance to the following: causing, by the computer, the security device to collect and transmit to the computer, first recognition mechanism information from a first of the plurality of recognition mechanisms; determining, by the computer, a degree of the match between the transmitted first recognition mechanism information and each of one or more corresponding stored recognition mechanism information, wherein each stored recognition mechanism information is associated with a human; determining, by the computer, that the transmitted first recognition mechanism information does not match, to a degree above a threshold value, any of the one or more corresponding stored recognition mechanism information; for each of one or more subsequent recognition mechanisms, wherein a sequence for activation of the one or more subsequent recognition mechanisms is sorted, in descending order, by a product of a recognition mechanism accuracy multiplied by a recognition mechanism convenience, until a determined recognition confidence level is above a corresponding threshold value: causing, by the computer, the security device to collect and transmit to the computer, the subsequent recognition mechanism information from the subsequent recognition mechanism; determining, by the computer, a degree of the match between the transmitted subsequent recognition mechanism information and corresponding stored recognition mechanism information; and in response to determining that the recognition confidence level is above the corresponding threshold value, classifying the corresponding human as authorized.