To reliably recognize something as an ad, as opposed to important information, would require very sophisticated processing. Scenario: "Sorry officer, I didn't s

To reliably recognize something as an ad, as opposed to important information, would require very sophisticated processing. Scenario: "Sorry officer, I didn't see that road sign, my glasses thought it was a billboard." And you need to do it in real time, within the constraints imposed by a device you wear on your nose. If you are Google or Microsoft Research, maybe this is something worth thinking about.