Abstract: A peripherals device for coupling with a handheld communication device includes an interface to the handheld communication device and a processor for performing functions complementary to the communications device. According to another embodiment, the peripherals device includes a conformal cavity for receiving a handheld communications device in a secure fashion. According to yet another embodiment, the peripherals device includes a data collection device for collecting data and using the interface for sending the collected data to a remote processor for further processing. The data collection device can include an image reader, a barcode reader, a signature capture device, an optical character recognition. In yet another embodiment, there is a power subsystem that powers the peripherals device and the handheld communications device. The power system has a low power state to conserve energy.