DYNAMIC 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 280 may establish a human interactive proof session 600 with a client user 110 by presenting a proof challenge set having multiple proof challenges. A clock 290 may record a challenge response time for each proof challenge. A processor 220 may provide access to an online data service 122 based on the human interactive proof session.