# Technical Notes

- [Identifiers & Registries](/technical-notes/digital-ids-and-electronic-registries.md): Who is the counterparty? Can I trust them?
- [Digital ID](/technical-notes/digital-ids-and-electronic-registries/digital-id.md): Many countries have built Digital IDs, including Singapore (Singpass), Rwanda’s national ID with eKYC, Chile’s national ID and India's Digital ID (Aadhaar).
- [Capabilities on ID system](/technical-notes/digital-ids-and-electronic-registries/digital-id/capabilities-on-id-system.md): How to convert any ID system into a DPI
- [ID-Auth](/technical-notes/digital-ids-and-electronic-registries/digital-id/id-auth.md)
- [Face Authentication](/technical-notes/digital-ids-and-electronic-registries/digital-id/face-authentication.md): Approach to enabling inclusion in onboarding individuals for use cases such as social protection
- [eKYC/ Identity profile sharing](/technical-notes/digital-ids-and-electronic-registries/digital-id/ekyc-identity-profile-sharing.md)
- [Single Sign On (SSO)](/technical-notes/digital-ids-and-electronic-registries/digital-id/single-sign-on-sso.md)
- [QR Code for Offline ID](/technical-notes/digital-ids-and-electronic-registries/digital-id/qr-code-for-offline-id.md): Best practices design and implementation guide
- [Data Sharing, Credentials and Models](/technical-notes/data-and-credentialing-infra.md): Can an individual/entity/society use its data for empowerment and improved services?
- [A primer to personal data sharing](/technical-notes/data-and-credentialing-infra/a-primer-to-personal-data-sharing.md)
- [Data standards](/technical-notes/data-and-credentialing-infra/data-standards.md): A key technology enabler in data exchange
- [Verifiable Credentials](/technical-notes/data-and-credentialing-infra/verifiable-credentials.md)
- [Building Data Analytics Pipelines](/technical-notes/data-and-credentialing-infra/building-data-analytics-pipelines.md)
- [eLockers](/technical-notes/data-and-credentialing-infra/elockers.md): A powerful intervention to scale up trusted digital credentials across the ecosystem
- [Non-personal Anonymised Datasets](/technical-notes/data-and-credentialing-infra/non-personal-anonymised-datasets.md): Guidelines for for Decision Making & Research
- [Decision Framework for Verifiable Credentials](/technical-notes/data-and-credentialing-infra/decision-framework-for-verifiable-credentials.md)
- [Trust Infra](/technical-notes/electronic-signature-pki-and-trust-infra.md): Can I assert in a tamper-proof manner that X item was agreed upon by and/or came from source Y?
- [Digital Signatures and PKI](/technical-notes/electronic-signature-pki-and-trust-infra/digital-signatures-and-pki.md)
- [eConsent](/technical-notes/electronic-signature-pki-and-trust-infra/econsent.md)
- [eSign](/technical-notes/electronic-signature-pki-and-trust-infra/esign.md)
- [Discovery & Fulfilment](/technical-notes/discovery-and-fulfillment-networks.md): Accessing any goods or services interoperably via any app or interface
- [Platforms to Protocols](/technical-notes/discovery-and-fulfillment-networks/platforms-to-protocols.md): Why do we need open networks?
- [Payments](/technical-notes/digital-payment-networks.md): P2P, P2M, B2B, G2P, and P2G.
- [Financial Address](/technical-notes/digital-payment-networks/financial-address.md): Normalised financial address for payments
- [Interoperable QR Code](/technical-notes/digital-payment-networks/interoperable-qr-code.md): P2P, P2M, Recurring/Bill Payments, etc.,
- [Interoperable Authentication](/technical-notes/digital-payment-networks/interoperable-authentication-p2p-p2m.md): P2P, P2M
- [Interoperable Bill Payments](/technical-notes/digital-payment-networks/interoperable-bill-payments.md): Streamlining the process of bill payments across authorities and departments
- [Cash-in Cash-Out (CICO)](/technical-notes/digital-payment-networks/cash-in-cash-out-cico.md): Interoperable banking agents and devices for last-mile CICO transactions
- [G2P Payments](/technical-notes/digital-payment-networks/g2p-payments.md): Increasing Efficiency of Government-to-Person Payments
- [Cloud-Agnostic Deployment of DPI and Data Portability](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability.md)
- [Architectural Principles for Cloud-Agnostic DPI](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/architectural-principles-for-cloud-agnostic-dpi.md)
- [Design deep dive](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/design-deep-dive.md)
- [Data Portability as Core Principle](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/data-portability-as-core-principle.md)
- [Implementation Patterns](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/implementation-patterns.md)
- [The Role of One-Click Deployment](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/the-role-of-one-click-deployment.md)
- [Governance and Decision Frameworks](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/governance-and-decision-frameworks.md)
- [Challenges and Trade-offs](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/challenges-and-trade-offs.md)
- [Recommendations for DPI Implementations by System Maturity](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/recommendations-for-dpi-implementations-by-system-maturity.md)
- [Future Directions](/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/future-directions.md)