A method of securing a portable electronic device with a touchscreen interface for use in a sterile environment comprises providing a sterilizable enclosure and providing a transfer device. The transfer device has an upper wall and a lower wall defining a passage. The enclosure provides a frame and a base movable between open and closed positions. The enclosure is held open with the transfer device. The electronic device is inserted through the passage and into the enclosure. One of the transfer device and the enclosure is moved away from the other.