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. 28, 2020
Filed:
Nov. 21, 2014
Appnexus Inc., New York, NY (US);
Yaron Lissack, Great Neck, NY (US);
Xandr Inc., New York, NY (US);
Abstract
Methods and apparatus for mobile device identification using TCP segment timestamps are disclosed. A request from a mobile device is received at a server. A TCP connection, initiated by the mobile device, is made between the server and the device, and a timestamp generated by the mobile device is retrieved from the options field of the TCP SYN segment. Other identifying information is received from the mobile device source, including an IP address, port, and HTTP headers. Based on the identifying information, the mobile device timestamp, and a current timestamp generated by the server, a likelihood is determined that the particular mobile device previously communicated with the server.