Farmers in the Son La region of north-west Vietnam are working together with ACIAR to produce high quality vegetables, supplying emerging retail markets in Vietnam. The market for high quality vegetables in Vietnam is expanding rapidly. Project farmers in Moc Chau supplied 690 tonnes of VietGAP-accredited safe-to-eat vegetables in 2016. That was 65% more than in the previous year. ACIAR projects AGB/2009/053 and AGB/2014/035 have identified the smart use of data as a key factor in helping Vietnamese farmers supply emerging retail vegetable markets. Data management has been used for: 1. Maintaining farm records. Farmers must keep records about agronomy and use of chemicals so they can trade VietGAP-certified vegetables to lucrative retail markets. 2. Value chain reporting. Analysis of vegetable input costs, prices and throughput data using specific software (MonQi® Fresh Studio) is used to inform farmers of the most profitable crops and when to produce them, and to measure their net farm income. 3. QR codes. Farmers are now using QR codes to help trace the origin of vegetable crops supplied to retailers back to the individual farms where they were produced. QR codes are ideal for developing countries because they do not require special barcode readers and software systems.