The Dutch store HEMA provides some rules for being 3D scanned and 3D printed:
– Avoid shiny clothes or accessories
– Avoid deep-dark clothes
– Glasses need manual post-production
– Loose hairs in face or earrings are too small to print
– Hair is best printable when tied together
– Avoid open jackets
– Avoid spread fingers
– Avoid cavities in one’s posture that are undetectable for the cameras