Cumbrous documentation, undue involvement of intermediaries and frequent data hacks, are some of the major roadblocks that deprive millions of individuals from having an official identity in India. Having examined the security issues related to a centralized database, several digital identity models have been presented in light of data protection, decentralization, immutability, revocation, auditability, speed and users control over the personally identifiable information. In this book, a comprehensive overview of physical as well as digital identities has been made. Taking into account the...