The Code of Good Practice on Referendums provides that:

"...electronic voting should be in conformity with Committee of Ministers’ Recommendation Rec (2004)11 on Legal, operational and technical standards for e-voting. In particular, it should be used only if it is safe, reliable, efficient, technically robust, open to independent verification and easily accessible to voters; the system must be transparent; unless channels of remote electronic voting are universally accessible, they shall be only an additional and optional means of voting."