Although millennials more frequently transact via mobile than shoppers from other age groups, concerns about identify fraud and security may be keeping them from using the channel more. According to a recent study of smartphone users in the U.S. and U.K. by Mitek, 25% of respondents conduct mobile transactions such as purchases at least once a day and 29% do so a few times a week. In addition, one in five make mobile purchases once or twice a month and 9% do so only a few times a year. Nearly half said they had concerns about the security of transactions. (eMarketer)