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US 8,803,658 B2Granted
Method, portable data carrier, and system for releasing a transaction using an acceleration sensor to sense mechanical oscillations
AssigneeGiesecke & Devrient GmbH
InventorsWolfgang Rankl, Michael Baldischweiler
Life of this patent
Estimating the term…
Abstract
A method, portable data carrier (1) and system for releasing a transaction using acceleration sensors (4, 5, 6) and a structure (8) on the data carrier (1).
Claims11
A method for releasing a transaction between a portable data carrier and an end device, comprising the steps:
- a) bringing the portable data carrier into an electromagnetic field generated by the end device, and supplying the portable data carrier with energy from the electromagnetic field,
- b) generating mechanical oscillations using a structure on the data carrier,
- c) capturing the mechanical oscillations in the portable data carrier by an acceleration sensor,
- d) evaluating an output signal of the acceleration sensor with regard to characteristic properties of the mechanical oscillations,
- e) releasing the transaction by the portable data carrier as soon as a characteristic property of the oscillations has been recognized by said evaluating of the output signal,
- wherein several mechanical oscillations are superimposed upon the generation and this oscillation superimposition is evaluated in the portable data carrier as a characteristic property.
3 more elements
A portable data carrier useable for data transmission with an end device, comprising:
- a card body comprising,
- an integrated circuit,
- an acceleration sensor mounted in the interior of the card body at a top side thereof,
- the acceleration sensor providing output signals to the integrated circuit, and
- a structure on a top side of the card body, capable of generating mechanical oscillations that cause release of data transmission via the acceleration sensor and the integrated circuit,
- wherein the structure comprises grooves, said grooves being arranged linearly, circular or wavelike in the structure, and
- wherein the grooves have different depths and have, distributed over the structure, different spacings.
4 more elements
Dependencies are inferred from the claim text.