A flash module includes a point light source, a lens assembly, an actuator mechanism, and a control system. The location identity attribute is associated with the digital information such that the digital information can be accessed only at the specific geographic location. The control signal is used to compensate for the pilot phase offset before the demodulated signal is equalized. A tensile stress of the first elasticized zones is greater than that of the second elasticized zone. Other embodiments are described and claimed.