Aspects and embodiments of the present invention relate to alternative kinds of transactions, which do not involve payment using only cash or a token device such as a smart card or chip and PIN card. In some embodiments, transactions involve a customer providing token-less transaction authentication information using customer interface means (150) that is adapted to receive, from a customer, in a first mode of operation, PIN or other token device authentication information, for use in a token device transaction, and token-less transaction authentication information, when operating in another mode of operation. In some embodiments, the customer interface means may be a specially-adapted chip and PIN card reader apparatus. Accordingly, such a customer input means facilitates manual input by a customer of voucher, coupon, accrued loyalty points, Air Miles, ticket or pass authentication information, without the need for a retailer to install new equipment or IT infrastructure.