An LCOS display, including specially manufactured spacers, and a process for making the display, are disclosed. A trench isolation structure is formed adjacent to the photosensitive device pinning layer. A cost of service is calculated based on the level of congestion. The housing includes a light-protected region and an opening for extraction andor insertion of the stimulable phosphor sheet. The method includes controlling the UWB module for scanning a chosen frequency band, and managing a communication to be performed by the device on the basis of the scanning result.