I want to scan several people at once, how can I do it the fastest, cheapest way?

how many cameras do I need the least?is it better if the space around them is white? I only wanted to take like 5 min. Per scan so not to bore people up.

is this doable?

It is REALLY basic and the quality is not the best but there is the AutoDesk 123D Catch. The only frustrating part is that it can be slow and problematic but it will let you do scans of people for cheap and easy. Way it works is you take a bunch of photos with either your phone or a camera while walking around your subject. It can make a decent scan for the price if that makes sense! Only snafoo is that it is cloud based so it can be prone to crashing and/or being stupid slow.

do you know a more accurate one?