Card and method of producing the card
The invention relates to a card including a computing unit for managing electronic coin data records, the electronic coin data records being issued by a central entity, and a card body with visible data and at least one visible feature. The central entity is at the same time the issuer or administrator of a series of banknotes and the at least one visible feature identifies the card as part of the series of banknotes to an observer. In addition, a method for producing such a card is also proposed.
1 . A card comprising:
a card body;
a semiconductor chip integrated within the card body and configured to store and manage electronic coin data records issued by a central entity; and
an interface unit for contactless or contact-based communication between the card and a terminal or a second card;
wherein the semiconductor chip is coupled to the interface unit and is configured to send an electronic coin data record to the second card or to receive an electronic coin data record from the second card by a secured transmission negotiated using a session key or a public-key infrastructure;
wherein the card body has visible data, and
wherein the card body has at least one visible feature defining a banknote series security element allowing authenticity verification of the card, the banknote series security element identifying a series of banknotes issued by the central entity, such that the at least one visible feature identifies the card as authentic to the central entity.
2 . The card of claim 1 , wherein the banknote series security element corresponds to a uniform security element.
3 . The card of claim 1 , wherein the visible feature being one or more of:
a security thread,
a security patch, and
a security strip.
4 . The card of claim 1 , wherein a series of banknotes is a series of banknotes of different denominations; and/or said visible data include a number, letters, text and/or other characters.
5 . The card according to claim 1 , wherein said at least one visible feature is a series feature and said series feature is:
a technically uniform feature used throughout said series of banknotes; and/or
an optically uniform feature used throughout said series of banknotes; and/or
a piece of meta-information used throughout said series of banknotes; and/or a pattern used throughout said series of banknotes.
6 . The card according to claim 1 , wherein said at least one visible feature is an independent series feature for said card or is from a collection of existing series features from said series of banknotes.
7 . The card according to claim 1 , wherein said card body is multi-layered and wherein said at least one visible feature is arranged on or in an inner layer of said card body.
8 . The card according to claim 7 , wherein a security element is arranged as a visible feature on or in said inner layer.
9 . The card according to claim 1 , wherein said card body is multi-layered and an inner layer of said card body is a banknote.
10 . The card according to claim 1 , wherein an issuer of said card is a commercial bank.
11 . The card according to claim 1 , wherein said card includes an input unit for user inputs, including for controlling the managing of the electronic coin data records, and/or an interface unit.
12 . The card according to claim 1 , further comprising an input unit configured to control transmission of the electronic data coin records from the card to the terminal based on user input.
13 . The card according to claim 12 , wherein said input unit comprises a button and/or a fingerprint sensor.
14 . The card according to claim 1 , wherein said electronic coin data records each comprise a concealment amount and a monetary amount.
15 . The card according to claim 1 , wherein said card body is multi-layered and an inner layer of said card body is a banknote substrate laminated into the card body, wherein the banknote substrate is smaller than other layers of the card body.