EVALUATING ENVIRONMENTAL INFORMATION DURING A TRANSACTION

A computer system includes a service terminal, a server computer system, and a mobile device and is used to facilitate a transaction between a user and the service terminal. The service terminal receives authentication information from the user and sends the authentication information to the computer server system. Before transaction resolves, the server computer system sends a request to the mobile device to gather environmental information from one or more sensors in the physical environment of the mobile device. In response, the mobile device identifies sensors, communications with one or more sensors, and receives environmental information. The mobile device sends indications of the environmental information, which the server computer system receives and evaluates. Based on the evaluating, the server computer system determines to alter the transaction, and based on the determination to alter the transaction sends a command altering the transaction to the service terminal.