1. A method of identifying a customer replaceable component, comprising: energizing the customer replaceable component; monitoring, with a processor, a response profile of the customer replaceable component to an applied voltage; comparing, with the processor, the monitored response profile of the customer replaceable component to one or more expected response profiles for the customer replaceable component; identifying whether the customer replaceable component is at least one of a compatible and an authorized customer replaceable component based on the comparison; and outputting a result of the identifying to a user, the monitoring comprising detecting one or more voltage spikes in the monitored response profile for the customer replaceable component; the customer replaceable component being a fuser unit in an image forming device, and the one or more voltage spikes occurring during a heating profile for the fuser unit at temperatures below a predetermined threshold temperature; and the predetermined threshold temperature being a temperature in a range above an ambient temperature for an operating environment of the fuser unit and below a minimum acceptable operating temperature for fusing operations using the fuser unit.