"We are waiting for the route of the march to be announced as well as the location of the sit-in, " the message said.

CNN: Riot police confront protesters in Tehran, witnesses say

After Motorola announced last summer that it would be using Skyhook instead of Google to collect location information in its handsets, Larry Page emailed his Android team asking about the impact of the decision.

FORBES: Internal Google Emails Shed Light On Importance Of Mobile Location Information