Chip card with additional piezoelectric security element in which security data is stored as a sequence of polarized and unpolarized regions

Data carrier, especially a chip card, has a chip (3) for storage and processing data and an additional piezoelectric security element (5) within which additional security information is stored. The information is stored as a sequence of polarized and unpolarized regions. Independent claims are also...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GERZ, CHRISTOPH, HOHMANN, ARNO, MOEDL, ALBERT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CALCULATING COMPUTING COUNTING HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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