Abstract: A thermoacoustic transducer integrating at least one piezoelectric element having a first surface and a second surface, a potential electrode that is electrically connected to the second surface, a ground electrode that is electrically connected to the first surface, a switch electrically connected to both the potential electrode and the ground electrode, a timer configured to match a pulse emanating from a radio-frequency emitter, further wherein the potential electrode and the ground electrode are electrically connected through an impedance when the switch is in an active state, further wherein the potential electrode and the ground electrode are not electrically connected when the switch is in an inactive state; and a housing accommodating the at least one piezoelectric element, potential electrode, ground electrode, and switch.

Abstract: A thermoacoustic transducer integrating at least one piezoelectric element having a first surface and a second surface, a potential electrode that is electrically connected to the second surface, a ground electrode that is electrically connected to the first surface, a switch electrically connected to both the potential electrode and the ground electrode, a timer configured to match a pulse emanating from a radio-frequency emitter, further wherein the potential electrode and the ground electrode are electrically connected through an impedance when the switch is in an active state, further wherein the potential electrode and the ground electrode are not electrically connected when the switch is in an inactive state; and a housing accommodating the at least one piezoelectric element, potential electrode, ground electrode, and switch.

Abstract: Process for controlling the access of a user to a service provided in a data network, to protect user data stored in a data base of the service from unauthorized access, the method comprising: (a) inputting, in a VoIP session, a voice sample of the user at a user data terminal which is at least temporarily connected to the data network, (b) processing, in a first processing step, the user's voice sample using a dedicated client implemented at the user data terminal, to obtain a pre-processed voice sample or a current voice profile of the user, (c) further processing, in a second processing step, the pre-processed voice sample or the current voice profile, including a comparison step of the current voice profile with an initial voice profile stored in a data base, and (d) outputting an access control signal for granting or rejecting access to the service, taking the result of the comparison step into account.

Abstract: Digital process for authentication of a user of a telecommunications or data network for access to protected data or a service reserved for a defined circle of users or for the use of data currently entered by the user, wherein a voice sample currently enunciated during an access attempt by the user on a telecommunications or VoIP terminal device is routed to a voice analysis unit and, herein, a current voice profile is computed and this is compared in a voice profile comparison unit against a previously stored initial voice profile and, in response to a positive comparison result, the user is authenticated and a first control signal enabling access, but in response to a negative comparison result a second control signal disabling access or triggering a substitute authentication procedure is generated.

Abstract: A process for authenticating a user to control remote access to a service, data base or data network is provided, in which during an enrollment step, an initial voice sample provided by the user is analyzed to obtain an initial user-specific voice profile and, in a later verification step, a current voice sample of the user is analyzed and compared to the initial voice profile to generate an access control signal. An additional user-dedicated authentication is generated in a pre-enrollment period, and the additional authentication is used to authenticate the user in the enrollment step and/or in an access control step prior to and independent on the enrollment step, in a provisional or supplementary authentication procedure.

Abstract: Method for communicating data using a public mobile telecommunications or data network, to grant a remote user access to a safe financial transaction service, the method comprising inputting a voice sample of a user requesting access to the service at a mobile terminal, transmitting the voice sample data to a remote voice authorization server, which is directly linked to a transaction processing server governing a debitable and creditable user account, analyzing the voice sample data at the voice authorization server vis-a-vis pre-stored voice profile data, and outputting an access control signal granting or rejecting the request access, in response to the result of the analysis, to the transaction processing server.

Abstract: The invention refers to a process and an arrangement for the generation of a signed text and/or image document, in particular a digital document for electronic sending and/or for electronic storage. The invention is characterized by the fact that the name and/or an image and/or any other representation of a person, for example a person code, is attached to the basic document in combination with an authentication certificate, wherein the authentication certificate is generated as the result of a voice analysis of the person performed in relation with generation of the document in terms of timing.

Abstract: Process for controlling the access of a user to a service provided in a data network, to protect user data stored in a data base of the service from unauthorized access, the method comprising: (a) inputting, in a VoIP session, a voice sample of the user at a user data terminal which is at least temporarily connected to the data network, (b) processing, in a first processing step, the user's voice sample using a dedicated client implemented at the user data terminal, to obtain a pre-processed voice sample or a current voice profile of the user, (c) further processing, in a second processing step, the pre-processed voice sample or the current voice profile, including a comparison step of the current voice profile with an initial voice profile stored in a data base, and (d) outputting an access control signal for granting or rejecting access to the service, taking the result of the comparison step into account.

Abstract: A process for authenticating a user to control remote access to a service, data base or data network is provided, in which during an enrolment step, an initial voice sample provided by the user is analyzed to obtain an initial user-specific voice profile and, in a later verification step, a current voice sample of the user is analyzed and compared to the initial voice profile to generate an access control signal. An additional user-dedicated authentication is generated in a pre-enrolment period, and the additional authentication is used to authenticate the user in the enrolment step and/or in an access control step prior to and independent on the enrolment step, in a provisional or supplementary authentication procedure.

Abstract: A virtual credit card, as a set of data, free of a physical substrate, the data being adapted to authorize a person who is in possession thereof to pay for a product or service, in particular in the framework of an online transaction, the data set being produced on the basis of a credit card account or a pre-payment and in response to a user authentication procedure involving an evaluation of biometric features of a user, in particular of his/her voice profile, and being available at a telecommunication terminal, in particular a mobile phone, of the authenticated user.

Abstract: Digital process for authentication of a user of a telecommunications or data network for access to protected data or a service reserved for a defined circle of users or for the use of data currently entered by the user, wherein a voice sample currently enunciated during an access attempt by the user on a telecommunications or VoIP terminal device is routed to a voice analysis unit and, herein, a current voice profile is computed and this is compared in a voice profile comparison unit against a previously stored initial voice profile and, in response to a positive comparison result, the user is authenticated and a first control signal enabling access, but in response to a negative comparison result a second control signal disabling access or triggering a substitute authentication procedure is generated.

Abstract: The invention refers to a process and an arrangement for the generation of a signed text and/or image document, in particular a digital document for electronic sending and/or for electronic storage. The invention is characterised by the fact that the name and/or an image and/or any other representation of a person, for example a person code, is attached to the basic document in combination with an authentication certificate, wherein the authentication certificate is generated as the result of a voice analysis of the person performed in relation with generation of the document in terms of timing.