Following publication last year of ISO TS 14067 on product carbon footprinting (a “TS” is a Technical Specification rather than an International Standard), an ad hoc group was established to investigate potential revisions of the document. One option being considered is to define the scope of 14067 to focus only on quantification of product carbon footprints, and to address communication and verification requirements by other ISO standards. Such an approach would leverage the full potential of other ISO standards (e.g., ISO 14064-3 and ISO 14027 Environmental labels and declarations — Type III environmental declarations — Product Category Rule (PCR) development), as well as mitigate concerns related to potential Technical Barriers to Trade (WTO Annex 3) that concern some developing countries.