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Title: Radio Frequency (Un)Identification: Results from a Proof-of-Concept Trial of the use of RFID Technology to Measure Microenterprise Turnover in Sri Lanka

Author(s): Suresh De Mel and David McKenzie

Publication Date: October 2014

Keyword(s): Microenterprises;, Profit and Sales Measurement, RFID. and Survey Methods

Programme Area(s): Development Economics

Abstract: Accurate measurement of stock levels, turnover, and profitability in microenterprises in developing countries is difficult due to the fact that the majority of these firms do not keep detailed records. We test the use of RFID tags as a means of objectively measuring stock levels and stock flow in small retail firms in Sri Lanka. In principle this offers the potential to track stock movements accurately. We compare the stock counts obtained from RFID reads to physical stock counts and to survey responses. We have three main findings. First, current RFID-technology is more difficult to use, and more time-consuming to employ, than we envisaged. Second, the technology works reasonably well for paper products, but very poorly for most products sold by microenterprises: on average we were able to read only about one-quarter of the products tagged, and there was considerable day-to-day variation in read-efficiency. Third, a comparison of survey responses and physical stock-takes shows much higher accuracy for survey measures. As a result, we conclude that this technology is currently unsuitable for improving stock measurement in microenterprises, except perhaps for a few products.

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Bibliographic Reference

De Mel, S and McKenzie, D. 2014. 'Radio Frequency (Un)Identification: Results from a Proof-of-Concept Trial of the use of RFID Technology to Measure Microenterprise Turnover in Sri Lanka'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=10225