The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2017
Filed:
Jun. 20, 2013
Siemens Aktiengesellschaft, Munich, DE;
Steffen Fries, Baldham, DE;
Andreas Güttinger, Fürth, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and system for authorizing a user at a field device by a portable communications device. A first information is acquired by the portable communications device for identifying the field device. The portable communications device sends to a system the first information and a second information for identifying at least one of (i) the portable communications device, and (ii) the user thereof. The system determines a first piece of access information on the basis of the first information and the second information, and sends the first piece of access information to the portable communications device. The portable communications device transmits the second information and the first piece of access information to the field device. The field device determines a second piece of access information on the basis of the second information, and compares the first piece of access information with the second piece of access information. Access to the field device is allowed upon determining that the first piece of access information and the second piece of access information match.