An identity authentication method, includes: at an electronic device having one or more processors and memory, the electronic device coupled with a display and one or more input devices: receiving an identity authentication request; in response to receiving the identity authentication request, performing an interactive authentication information exchange between the electronic device and a user, including: displaying, on the display, first visual information in a first manner; displaying, on the display, the first visual information in a second manner that is distinct from the first manner, wherein the first visual information displayed in the second manner includes a timing characteristic that is absent from the first visual information displayed in the first manner; receiving user input entered in accordance with the first visual information displayed in the second manner; and verifying that the user input conforms to the timing characteristic in the first visual information displayed in the second manner.