Who was TN Seshan?

TN Seshan aka Tirunellai Narayana Iyer Seshan was former Chief Election Commissioner who died on November 10, 2019 in Chennai at his own home. He described himself that he ate politicians for breakfast in an interview. It was said that politicians are either afraid of God or TN Seshan. TN Seshan was the man who made voter IDs a possibility in India. He took serious and strict steps to empower the voting system in India