The 1969 act, in section " 49-O" that a person can go to the polling booth and not vote for anybody is something which is known to very few people. This is something even the election commission trying to implement with the EVM's as it has practical problems and Of course it can be overcome by Having an extra option of NOTA as mentioned earlier by somebody in the EVM. But as usual the Red Tapism in India (Political Parties) will not allow that to happen. I am not sure why the Election commission also does not mention anything about the 49-O publicly.. or to the employees who work on Election duty... Probably even they are afraid of the Political parties of the country...