michaelspence great questions, Michael:
1. This ION decentralized identity project, developed within the Decentralized Identity Foundation, that we contribute to does not have anything to do with any ICO token or alt-coin cryptocurrency. There are no tokens or alt-coins necessary for any part of ION's operation, so be weary of any person, organization, or entity that claims something to the contrary.
2. ION is a DPKI/DID network, so it's more like a decentralized version of DNS domains for all things (people, organizations, things, etc.), while FIDO/WebAuthn are authentication protocols/APIs that allow sites to authenticate/login users based on keys they hold. FIDO/WebAuthn may, at some point, be upgraded to support ION and other standard DID implementations alongside the centralized account-based authn they support today.