Epson Projector Configuration Tool (EPCT) is an app that allows you to change projector settings and check information using NFC wireless communications technology. By simply holding an NFC-compatible iPhone1 or Android2 phone over the NFC mark on the projector, you can obtain information and change settings even when the projector is off. You can configure network and projection settings before the installation, which can greatly reduce the time and effort that is required to install multiple projectors.