A merchandise display security device for a portable electronic device having a removable component is provided. The merchandise display security device includes a sensor configured to be secured to the portable electronic device and monitoring electronics configured to detect unauthorized removal of the sensor from the portable electronic device. The merchandise display security device also includes a secondary sensor in electrical communication with the monitoring electronics, wherein the secondary sensor includes a flexible component configured to be positioned between the portable electronic device and the removable component. The monitoring electronics is configured to detect unauthorized removal of the removable component in response to movement of the flexible component.
