Depending on your budget you may want to check out full body hybrid 3D scanners such as the Twinstant Mobile: http://web.twindom.com/products/#twinstantmobile
Here are a few articles that explain the pros and cons of the most common technologies used for scanning full bodies:
http://blog.twindom.com/blog/overview-dslr-photogrammetry-3d-full-body-scanner
http://blog.twindom.com/blog/overview-turntable-based-3d-body-scanners
http://blog.twindom.com/blog/overview-hybrid-full-body-3d-scanners
http://blog.twindom.com/blog/overview-handheld-3d-scanners