Wireless communication and proximity-based feedback technologies are disclosed. In some examples, a system identifies, based on analysis of signal(s) (e.g., conveying transaction object information) received by a reader interface from a transaction object in response to physical proximity between the transaction object and the reader interface, an indication of a movement of the transaction object relative to the reader interface. The system generates, based on the indication, feedback indicating a recommended change to the movement to improve an ability of the reader interface to read the transaction object. The system sends the feedback to an output device that to output the feedback to indicate the recommended change. The system reads the transaction object information from the transaction object using the reader interface in response to an improvement in the ability of the reader interface to read the transaction object and in response to the output of the feedback.