Yeah that's exactly the type of things I'm worried about. Smartphone apps have potential access to an incredible amount of sensitive data and I always found Android's permission system to be woefully inadequate.

There is an increasing need for a container app that will feed whatever sensor data you want to the apps within the container. Also there would need to be some preconfigured sensor data profiles, like "Occasionally cheating husband living in city X" or "Really rich housewife living in city Y" or maybe "piss-poor guy living in a rural developing country"