Bank self-service terminal device, system and money exchange method

The invention discloses bank self-service terminal device. The bank self-service terminal device comprises an iris collector, a currency outlet device and a controller. The iris collector is used forcollecting an iris image of a user. The currency outlet device is used for providing currency. The controller is used for controlling the iris collector to collect the iris image when the bank self-service terminal device breaks down; obtaining first identity information of the user according to the iris image; acquiring user information when the bank self-service terminal device fails; and when the first identity information is consistent with the user information, controlling the currency outlet device to provide currency. The fault processing efficiency is improved, the currency returning speed is increased when a currency swallowing fault occurs, and the user experience is improved. 本申请公开了一种银行自助终端设备，包括：虹膜采集器、出货币装置和控制器；所述虹膜采集器，用于采集用户的虹膜图像；所述出货币装置，用于提供货币；所述控制器，用于在所述银行自助终端设备出现故障时，控制所述虹膜采集器采集所述虹膜图像；根据所述虹膜图像，获得所述用户