For the representation of a Bio-engineered device, I decided to use organic gelatine. Besides its natural appearance, this material, just as real flesh, is conducive and proper for controlling a touchscreen.
To accomplish this interaction, it was necessary to install a cable inside of the synthetic finger connected to the metallic frame of the cellphone. This circuit allows the system to be electronically grounded and the touch interaction possible.
The movement is performed by servo motors, drinking straw joints, and nylon threads.