Simple Touch Switch

This is a simple touch circuit diagram.I think you can use this for many purposes.I have used this circuit as a security circuit device.Here I have used very common Transistors   2N 5458 N and 2N2222 to gain the signal .2N3906 Transistor work as a switch here.

Note 
# Build this circuit on a PCB
# Use a copper plate to touch senseer 
# Don't supply more than12V