Systems and methods for distinguishing among human users and software robots
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United States of America Patent
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Jun 5, 2018
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app pub date -
May 5, 2017
filing date -
May 5, 2017
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Abstract
A technique for distinguishing between a human user and a software robot. The technique includes: receiving a first communication from a device different from the at least one computer; identifying, from the first communication, a request to access a web resource; generating an image that encodes a challenge text, the image comprising data stored in a plurality of channels including a transparency channel, the generating comprising: generating decoding information representing the challenge text; and storing the decoding information in the transparency channel of the image; transmitting, via the at least one network, the generated image to the device; receiving a second communication from the device; identifying, from the second communication, a response text; and providing the device with access to the web resource based on a comparison between the challenge text and the response text.
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