SA ID Validator

The SA ID Validator is a deterministic syntactic validator for South African ID numbers. It validates 13-digit numeric input, ensures proper birth date encoding, and computes a checksum to detect common data-entry errors. It does not query government databases or verify identity against official records.

Core checks include a length test, numeric-only validation, and date validation using YYMMDD encoding with leap-year handling. It derives gender and citizenship indicators from specific digit blocks and validates the final checksum using a standard Luhn-like algorithm. The output is deterministic and suitable for machine consumption in pipelines.

Outputs include is_valid, birth_date (YYYY-MM-DD), gender (male/female/unknown), citizenship_status (Citizen/ Permanent Resident/Unknown), and checksum_ok. If a check fails, the tool returns precise diagnostics without UI prompts, enabling automated handling, retries, or data cleansing. It supports single-ID validation and batch usage when integrated into data workflows.

Audience includes HR teams, IT and data engineers, compliance professionals, and developers building onboarding or identity workflows. Unique value comes from explicit data-quality signals, fast validation at point-of-entry, and clear, machine-readable results that reduce downstream errors and rework.