摘要:
A medication reminder system, comprising a control device operable to receive data representing a dosage regime for the medication for use with an electronic tag, the tag communicatively coupled to a display device to be placed on or in association with an item containing the medication, the tag including a transceiver operable to send and receive data to and from the control device, wherein the display device is operable to display an indicator representing the dosage regime or a parameter associated with the dosage regime.
摘要:
An active retroreflector 100 comprising a retroreflective layer 102 and a switchable electro-optic absorption layer 104, arranged to cover at least part of the retroreflective layer 102, wherein the switchable electro-optic absorption layer 104 is a guest host liquid crystal layer switchable between a low absorption state wherein incident light is retroreflected and a high absorption state wherein fluorescent dichroic dye particles fluoresce. A polymer dispersed liquid crystal layer (412 fig 4) may also be provided which is switchable between high and low scattering states. The present arrangement allows the visibility of the active retroreflector to be adapted to different lighting conditions.