If e-voting is currently being used, what type(s) of technology used? - Mongolia

Country: 
Mongolia
Question: 
If e-voting is currently being used, what type(s) of technology used?
Answer: 
Optical Mark Recognition (OMR) or Optical Character Recognition (OCR) SMS voting system
Comments: 

The OMR and OCR are used for national elections. In 2015, Mongolia for the first time used SMS voting for a referendum, which can be read more about here.