Wireless control system for spy devices based dual tone multi frequency technology

Obtaining information is one of the most important requirements for
intelligence works, spy surveillance cameras and listening devices are among
the important means for this. One problem of using these means is a
mechanism of controlling them to sustain their work efficiently for the
perpetuating of achieving the purpose of their installation. In this research, the
problem of controlling these devices has been overcome, by designing a
system dependent on the dual tone multi frequency (DTMF) and global system
for mobile (GSM) networks. In the proposed work, designing and
implementing a system to remotely and wirelessly control of the movement of
spy cameras in all directions as well as the ability to control the on/off listing
audio device anytime and anywhere. The proposed mechanism is implemented
by dividing the work into nine modes, with each one performing one specific
function. These work modes are used to control all system activities such as
control the horizontal directional motor (HDM) to change the spy camera in
different horizontal directions, control the vertical directional motor (VDM) to
change the camera in vertical directions and control the working status of the
listening device.