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

Country: 
Switzerland
Question: 
If e-voting is currently being used, what type(s) of technology used?
Answer: 
Optical Mark Recognition (OMR) or Optical Character Recognition (OCR) Internet voting systems
Source: 

Politicalscientists / Computer scientist

FederalChancellery, Political Rights Section