A touch panel apparatus and a method are provided. The touch panel apparatus includes a touch panel, a pulse sensor, and a processor. The touch panel detects a heartbeat-based signal from a first part of a target body. The pulse sensor detects a pulse signal from a second part of the target body. The processor acquires a pulse transit time (PTT) based on the detected heartbeat-based signal and the detected pulse signal. The touch panel apparatus contemporaneously detects the heartbeat-based signal and the pulse signal using the touch panel and the pulse sensor, respectively.
