This paper considers the concept of consumer acceptance of medical products and its importance to successful healthcare provision. The critical dimensions ('domains') of acceptance for a product designed to assist family planning, and the importance of using high-quality psychometric scales to assess these domains, are discussed. Qualitative and quantitative data from acceptance studies with a personal contraceptive monitor, PERSONA, are presented. These data indicate that the monitor is user-friendly and acceptable to couples, and underline the importance of user acceptability for home monitors designed to assist family planning--including those used for conception purposes.