Patent ID: 9208293
Filing Date: 2015-12-08
Classification: G06F,H04L,H04W

Abstract:
1. A method of retrieving content associated with a public information display, comprising: receiving, by an authentication server, a private key; receiving a digital signature associated with a tag, a content address associated with the tag, a location of the tag, and a location of a portable electronic device from the portable electronic device, wherein the digital signature, the content address, and the location of the tag are read from the tag by the portable electronic device; decrypting, by the authentication server, the digital signature associated with the tag using the private key; authenticating, by the authentication server, the content address by comparing the content address associated with the tag and the location of the tag to an expected content address associated with the tag and an expected location of the tag and by comparing the location of tag with the location of the portable electronic device, wherein the expected content address associated with the tag and the expected location of the tag are determined based on the decrypted digital signature; and sending, by the authentication server, a positive authentication when the content address associated with the tag and the location of the tag matches the expected content address associated with the tag and the expected location of the tag, wherein the positive authentication enables access to content referenced by the content address associated with the tag.