I spoke to this doctor, he is a friend of mine. as per him all what he says based on scientific evidence...
If you have any doubt you can contact him...
Aniva machan mamath mata enna thiyana waasiya satheta illanawa.. e wagema, ungen duwen bill unoth eka gewanawa.. dan ehema nisa un maawa aduranawa.. mama weredie kiyala kiuwoth bill eka hodata check karanawa.
Koheda place eka thiyenne? PM me. I also have a system. Installed at some restaurants in Colombo and Arugambay..
Touch also enable, but more facilities available in normal system..