UN IWG CLIV workshop briefing on ISO/WD 26315 status. The working draft specifies child presence detection surrogates with geometric, optical, near-infrared, radar-related and physiological properties representing newborn to 6-year-old children. Core clauses and three normative annexes address surrogate classes, dimensional tables, visual and near-infrared recognition properties, and radar-specific recognition properties. Open technical decisions include radar bands by region, respiration data by surrogate class, motion requirements as mandatory versus optional, optical and near-infrared clothing details, validation methods and measurement procedures, and dimensional alignment with Euro NCAP standards.