Abstract: A method, an apparatus, and a system for testing a terminal. The method includes: receiving a smart card switching instruction; acquiring a card channel identifier from the smart card switching instruction; switching a connected-card channel to a target card channel corresponding to the card channel identifier when the target card channel corresponding to the card channel identifier is a contactless card channel; receiving a data request for a terminal test; acquiring, through a first relay repeater, response data in response to the data request, from a smart card to be tested within the target card channel; and sending, through a second relay repeater, the response data to the terminal whereby accomplishing the terminal test.

Abstract: A method and an apparatus for improving a reading and writing speed of a contactless card, a terminal device, and a computer-readable storage medium. The method includes: running a driver of a POS terminal; obtaining a communication signal between the driver and an interface chip, in which data to be read and written of the contactless card are obtained by the interface chip according to the communication signal, and wherein data interaction are performed between a card reader on which the interface chip located and the contactless card; obtaining a timing waveform diagram of the driver according to the communication signal; obtaining a running time of the driver according to the timing waveform diagram; modifying the driver to shorten the running time of the driver according to the running time and a preset driver modification rule.