My opinion has always been the same on these kinds of projects which gather biometrical information in exchange for a small money. There is something really fishy going on with World coin, something we are not completely aware of.
At the very least, we could be talking about a project of biometric information gathering for the sake of selling all that information to hackers or cracked on the hidden web. In the worst case scenario, this is some cover project being funded by some authoritarian government so they can have some way to identify all the people they can from all the countries of the planet.
For example, this project could have been started by the Chinese government or the Iranian government or who knows...

I would never dare to get any closer to those orbs, to be honest. It is quite creepy how there are so many people willing to sell their identity for a few dollars.