Abstract
Optical identity (ID) tags have been introduced and described to achieve remote targetrecognition and identification. Optical ID tags usually contain encrypted signatures to beread out, decrypted and verified. In this paper, new features are introduced so that ID tagscan be reliably used for remote detection and verification even if the captured tag isextremely degraded by perspective or optical distortion. Optimization of the IDtag size as well as the number of bits required to display the complex-amplitudeinformation are analysed and discussed. The highest compression of grey levels, whichcorresponds to binary ID tags, is studied. Decryption and verification resultsare provided to analyse the possibilities of the newly designed optical ID tags.
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