  To support the development of internet-of-things applications, an enormous
population of low-power devices are expected to be incorporated in wireless
networks performing sensing and communication tasks. As a key technology for
improving the data collection efficiency, integrated sensing and communication
(ISAC) enables simultaneous data transmission and radar sensing by reusing the
same radio signals. In addition to information carriers, wireless signals can
also serve as energy delivers, which enables simultaneous wireless information
and power transfer (SWIPT). To improve the energy and spectrum efficiency, the
advantages of ISAC and SWIPT are expected to be exploited, leading to the
emerging technology of integrating sensing, communication, and power transfer
(ISCPT). In this article, a timely overview of ISCPT is provided with the
description of the fundamentals, the characterization of the theoretical
boundary, the discussion on the key technologies, and the demonstration of the
implementation platform.
