Patent ID: 8866648

Claim:
A through metal communication system, comprising: a host robot configured for generating a text message; a transmit microcontroller mounted on the robot; a metal surface gripping member connected to the host robot and in operable communication with the host robot; a text to tapping code converter connected to the transmit microcontroller and configured to convert the text message to the tapping code, the transmit microcontroller being configured for formulating tapping instructions according to tapping code output from the text to tapping code converter; and an actuator disposed on the host robot, the actuator being positioned to strike a metal surface when the metal surface gripping member is gripping the metal surface, the actuator being driven by the transmit microcontroller according to the tapping instructions from the transmit microcontroller; and wherein, when the metal surface gripping member is gripping the metal surface, the actuator taps out a code by striking the metal surface, thereby generating acoustic signals conducted by the metal surface, the code being determined by the tapping instructions from the transmit microcontroller.