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(ii) The ECI-EVMs cannot be reprogrammed.

(iii)The software for this chip is developed in-house by a select group of engineers in the two PSUs independently from each other. A select software development group of 2-3 engineers designs the source code and this work is not sub-contracted.

(iv)The source code is so designed that it allows a voter to cast the vote only once. The next vote can be recorded only after the Presiding Officer enables the ballot on the Control Unit. In between the machine becomes dead to any signal from outside (except from the Control Unit).

(v) After completion of software design, testing and evaluation of the software is carried out by an independent testing group as per the software :: 10 ::

Election Petition No.32/2009 requirements specifications (SRS). This ensures that the software has really been written as per the requirements laid down for its intended use only.
(vi) After successful completion of such evaluation, machine code of the source programme code known as hex-code (not the source code itself) is given to the micro controller manufacturer for fusing in the micro controllers. From this machine code, the source code cannot be read. Source code is never handed over to anyone outside the software group.