The invention discloses a
field detection-based card transaction method, which is characterized in that in a card searching stage, a
time sequence among various
modes of a terminal is reasonably set, various card
payment scenes are compatible, the problem that the current terminal needs to switch different card identification interfaces for transaction is solved, and the transaction efficiency is improved by combining a
field detection mode of LPCD detection. According to the method for judging whether a transaction object is a non-contact entity card, the
polling time of an NFC Tag mode of equipment is prolonged for a transaction scene of the non-entity card, the
payment success rate of an electronic wallet and application
payment selectable transaction scene is improved, a strategy of generating load change by the NFC Tag of a switch terminal is provided for the mobile
electronic equipment in an LPCD mode continuously, and the payment success rate of the mobile
electronic equipment is improved. And the
electronic equipment is guided to be switched from the LPCD mode to the
card reader mode, so that the success rate of
jumping to the payment application by the electronic equipment is increased. And finally, a card searching result is timely returned to a transaction layer, and payment is smoothly completed.