Systems and methods of token piggybacking

A non-transitory computer-readable medium storing executable instructions which, when executed by a processor of a content publisher, cause the processor to perform operations comprising:

• receiving at the content publisher, from a client device, a web object request that includes data representing name-value pairs of a plurality of first cookies previously set on the client device under a first domain name;
• extracting the data representing the name-value pairs of the plurality of first cookies from the web object request;
• and
• sending, by the content publisher, a directive to the client device to set, under a second domain name associated with the content publisher, a second cookie comprising a name-value pair whose value encodes the name-value pairs of the plurality of first cookies.

A computer system implementing a content publisher, the system comprising:

• at least one processor;
• and
• one or more machine-readable media storing instructions for execution by the at least one processor, the instructions comprising a plurality of software modules comprising:
• a communication module to receive, from a client device, a web object request that includes data representing name-value pairs of a plurality of first cookies previously set on the client device under a first domain name;
• a piggybacking module to extract the data representing the name-value pairs of the plurality of first cookies from the web object request;
• and
• a cookie setter to send, by the content publisher, a directive to the client device to set, under a second domain name associated with the content publisher, a second cookie comprising a name-value pair whose value encodes the name-value pairs of the plurality of first cookies.