Smart cards having high quality external surfaces can be made through the use of partially cured, low shrinkage glues to hold the smart card's electronic elements during their immersion in a thermosetting material that becomes the core layer of said cards. Mounds of low shrinkages give serve to hold...http://www.google.co.uk/patents/US6025054?utm_source=gb-gplus-sharePatent US6025054 - Smart cards having glue-positioned electronic components