Once accounts get verified by 3rd parties your blockchain ID is then tokenized on the blockchain. This becomes your unique ID. Your ID token gives you access to all Blockchain ID Apps that have partner in this case Civic.

Fake and double identity will be curbed. Perhaps the evolution is faster than we anticipate, census will be easier carried out than now, even the health sector will have ids matched to dna's which can be used for paternal identification through accurate and transparent secured result storage sytem