Food identification by barcode scanning in the Netherlands: a quality assessment of labelled food product databases underlying popular nutrition applications

• Published in: Public health nutrition Vol. 22; no. 7; pp. 1215 - 1222
• Main Authors: Maringer, Marcus, Wisse-Voorwinden, Nancy, Veer, Pieter van ’t, Geelen, Anouk
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.05.2019
• Subjects: Accuracy; Availability; Barcode scanning; Barcodes; barcoding; Databases, Factual; Diet; Diet apps; Dietary intake assessment; Energy; Energy levels; Energy storage; Exports; Feasibility studies; Food; Food availability; Food database; Food identification; Food Labeling; Food products; Food quality; food records; Food security; Food selection; foods; Health informatics; HOT TOPIC: ICT Assisted Dietary Data Collection and Analysis; Humans; Identification; Inventory; Labelled food products; Market shares; Mobile Applications; Netherlands; nutrient content; Nutrients; Nutrition; nutrition assessment; Nutrition research; Nutritive Value; popular diets; Quality; Quality assessment; Quality control; Recording; Research Paper; Scanners; Smartphones; Supermarkets; Technological innovations; Usability; User interface; Netherlands; United States > US; Food identification; Dietary intake assessment; Food database; Barcode scanning; Labelled food products; Barcodes; Technological innovations; Diet apps
• ISSN: 1368-9800; 1475-2727; 1475-2727
• DOI: 10.1017/S136898001800157X

The quality of labelled food product databases underlying popular diet applications (apps) with barcode scanners was investigated. Product identification rates for the scanned products and the availability and accuracy of nutrient values were calculated. One hundred food products were selected from the two largest supermarket chains in the Netherlands. Using the barcode scanners of the selected apps, the products were scanned and the results recorded as food diary entries. The collected data were exported. Seven diet apps with barcode scanner and food recording feature were selected from the Google Play and Apple app stores. Energy values were available for 99 % of the scanned products, of which on average 79 % deviated not more than 5 % from the true value. MyFitnessPal provided values for sixteen nutrients, while Virtuagym Food and Yazio provided values for only four nutrients. MyFitnessPal also showed the largest percentage of correctly identified products (i.e. 96 %) and SparkPeople the smallest (i.e. 5 %). The accuracy of the provided nutrient values varied greatly between apps and nutrients. While energy was the most consistently and accurately reported value, the availability and accuracy of other values varied greatly between apps. Whereas popular diet apps with barcode scanners might be valuable tools for dietary assessments on the product and energy level, they appear less suitable for assessments on the nutrient level. The presence of user-generated database entries implies that the availability of food products might vary depending on the size and diversity of an app's user base.