A Wi-Key electronic monitoring device, and method of use, to receive the identification number and sensor data (e.g. weight, temperature) of a compatible apparatus (e.g. kitchen utensils, toys). The Wi-Key device then wirelessly transmits the processed raw sensor data to a user's device (i.e. a smartphone) to be analyzed and stored, but only if the apparatus's identification number is valid. The user's mobile device may also comprise software to assist in monitoring conditions within and around the apparatus, or to transmit commands to the Wi-Key device to control the apparatus's operation. The Wi-Key device comprises three units: a flash drive like, pluggable Wi-Key unit; and a connector unit affixed to an ID PCB unit that both are embedded within the apparatus. One Wi-Key pluggable unit may be used with a wide variety of types of compatible apparatuses, and/or receive sensor data simultaneously from multiple sensors within or near an apparatus.