SEMANTIC CHALLENGE FOR AUDIO HUMAN INTERACTIVE PROOF

摘要

In one embodiment, a human interactive proof portal 140 may control access to an online data service 122. A communication interface 260 establishing a human interactive proof session 600 with a user device 110 accessing an online data service 122. The communication interface 260 may iteratively send an audio proof challenge set having multiple audio proof challenges each asking a semantic query to the user device 110 for presentation to a user. A processor 220 may provide access to the online data service 122 based in part on at least one proof response having a semantic reply indicating a human user.