Radio frequency identification aiding the visually impaired, including receiving in an electronic travel aid ("ETA") for the visually impaired, from a radio frequency identification ("RFID") tag associated with an object, information that describes the object and displaying a description of the object through an interface for a visually impaired person. Information that describes the object may include at least one of a predefined set of attributes that describe the object. Many embodiments include retrieving, in dependence upon a unique identification code, further information describing the object—either locally from an ETA or through a network from a remote store of information.

 
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> PLANAR LIGHT ILLUMINATION AND IMAGING (PLIIM) BASED SYSTEM HAVING A LINEAR IMAGE DETECTION CHIP MOUNTING ASSEMBLY WITH MEANS FOR PREVENTING MISALIGNMENT BETWEEN THE FIELD OF VIEW (FOV) OF SAID LINEAR IMAGE DETECTION CHIP AND THE CO-PLANAR LASER ILLUMINATION BEAM (PLIB) PRODUCED BY SAID PLIIM BASED SYSTEM, IN RESPONSE TO THERMAL EXPANSION AND/OR CONTRACTION WITHIN SAID PLIIM BASED SYSTEM

> Method of and system for automatically producing digital images of moving objects, with pixels having a substantially uniform white level independent of the velocities of the moving objects

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