Portable data carrier

A portable data carrier assemblage comprising;

• a laminar support unit comprising a flat pliable plastic sheath having first and second transversely opposite sides and having longitudinal and lateral extents which are relatively larger and smaller, respectively,
• said sheath having an open front end and a back end and a passage therein longitudinally extending between said ends,
• a laminar plastic miniature card having longitudinal and lateral extents each smaller than said lateral extent of said unit,
• said sheath having a transverse thickness when empty which is less than that of said miniature card,
• data conveying means carried by said miniature card for transferring data between said miniature card and first apparatus external thereto when said miniature card is placed in a receptacle space in said apparatus large enough to receive said miniature card but too small to receive said unit,
• holder means for retaining said miniature card attached with said unit to be supported thereby and transportable therewith, the assemblage of said unit, miniature card and holder means being longitudinally insertable with a snug fit into a card holding recess in a wallet,
• said miniature card being selectably detachable from said unit to permit said miniature card to be inserted in said receptacle space and reattached by said holder means with said unit,
• an additional laminar plastic card having longitudinal and lateral extents each greater than either of such extents of such miniature card so as to be a standard-size card,
• said standard-size card being removably insertable through said open front end of said sheath into said passage to have a snug fit therein with said sheath,
• said standard-size card when fully seated in said passage providing a stiffening member for said support unit to render dimensionally stable said unit as a whole,
• said standard-size card having formed therein an aperture extending transversely through such card and disposed in the longitudinal and lateral extents thereof to transversely register with said miniature card when both of said cards are in fully seated position in said assemblage, and
• when said cards are so inserted, the perimeter of said aperture is spaced outwardly of said miniature card everywhere around said miniature card so that said miniature card is transversely displaceable at least partly into said aperture by pliant deformation of said sheath.