How EVM Works :
An EVM runs on 6-volt batteries to eliminate the need of any external power source. It is designed to record 64 candidate names and 3,840 votes at the max. The 64 candidate names can be split across (a maximum of) 4 balloting units connected in parallel, with 16 candidate names on each of the unit.
How is it better than conventional voting methods?
No electricity connection required:
Since the EVMs are powered by internal batteries, no electricity connection or other source is required. This ensures that the election process is not hindered even in the remote areas of the country where a power connection is not always available.
Though the initial investment cost of each EVM is high, it cuts up on a range of other expenditure related to the voting process. Eliminating the need of ballot papers (used in lakhs), transport and storage of these papers after voting, work force employed in counting of these votes and so on saves up a lot of money.
Carrying an EVM is much easier than a conventional Ballot box as they are lighter in weight.
Easier counting of votes:
EVMs make it infinitely easier to count votes. A total count of the casted votes is stored in the internal memory of the unit. This data is later erased manually after the counting is done.
The shelf Life of an EVM used in India is said to be 15 years.
Ease of use:
EVMs are much easier to use for the part population of India which is illiterate, as compared to the conventional ways of voting.
Display of result: The results of the voting can only be displayed once the voting process ends. This is ensured by two safeguards: First, the Result Button cannot be pressed until the Close button is pressed (which ends the voting for the day). Also, the Result button is sealed and can only be broken at the vote counting station.
How secure are Electronic Voting Machines?
As of now, Electronic Voting Machines seem to be a pretty safe option.
First, these machines do not work on the internet or are not connected wirelessly. So they cannot be ‘hacked’ by a hacker form anywhere.
The machines can only be ‘tampered’ with (if that is a possibility) but as these, machines are always kept under high security, nobody apart from the Election Commission of India has access to them.
Therefore for tampering an electronic voting machine, a person has to have an access to its unit, chances of which are next to negligible.
Furthermore, to have an impact on the election’s outcome, one will have to access multiple EVM units which is again not possible.
Also, the operating program of EVM’s controller unit is engraved permanently in silicon by the manufacturers. This program cannot be changed once the unit is manufactured, even by the manufacturer.