There was an article on Google in the current issue of Fortune (August 14, 2014), it mentions Project Tango. Project Tango is a 3D mapping tablet, according to the site it makes over 250,000 measurements per second. The form factor is a average smartphone with custom software and sensors. What little is known on the site, it only mentions a depth sensing camera doing 250,000 measurements per second, apparently no IR scanning like in traditional LiDAR devices.
Google is not a name in the surveying business, this is only a prototype device but it has so much potential to surveying to the next level, it really does crowd source it. To get scans all you would need is a smartphone with new sensors. There is no data on the data tolerances of this device but it is only a prototype and could move into survey-quality in future upgrades.