Google Maps Floor Plan Marker for Android was announced late last week. But first, a disclaimer from The Verge:
It's important to emphasize that this app is intended only for those that have provided the company with floor plans for an indoor venue. Google flatly states that the software will primarily be of interest "to map enthusiasts and venue owners," and hopefully that disclaimer will be enough to ward off erroneous downloads.
Those who do run the app are basically giving Google detailed information on local wi-fi/cell coverage to better locate devices (and thus people) in the venue. I have a question I've seen in comments on the news already: Who has permission to collect and share this data with Google? The ownder of the property? The vendor renting it? Those who work there? Those who shop there? I'm wondering if there's legal precident here.