Click on the image to check the artwork
By certification 
Put hidden lens inside of wall picutres,it can scan backside marked cards.The user can see what is the card it is through computer and TV.
Function:
The lens can adjust right,left,up and down. Also can adjust Zoom + and Zoom -.
Distance: Maximum 3 Meters.
Function:
The lens can adjust right,left,up and down. Also can adjust Zoom + and Zoom -.
Distance: Maximum 3 Meters.
