He entered politics through trade union activities and joined State Congress in 1938. In 1940, he became a member of the Communist Party of India (CPI). During his 40 years as a politician he was imprisoned for five years and six months and was in hiding for four and half years. He was a state secretariat member of the CPI in 1957. He is the only living Keralite among the 32 members who left the CPI National Council in 1964 to form the CPI(M). He was Secretary of the Kerala State Committee between 1980 and 1992. Since 1985 he is the member of the CPI(M) Polit Bureau until he was removed as a party disciplinary action. He is the senior most leader of CPI(M) in India.
2009 ki garmiyon ke baad se, do kredit card companiyaan vishesh maaicroSD card ke vikaas ke liye dalaas, Texas aadhaarit divaaisafideliti ke saath kaam kar rahi hain. jab ise ek mobile phone mein daala jaaega to yeh microSD card, ek nishkriya taig aur ek RFID reedar, donon ho sakta hai. microSD daalne ke baad, ek upayogakarta ka phone bank khaate se jud jaaega aur usaka upayog mobile bhugataan mein kiya jaaega.
design ke aadhaar par, EPCglobal Network bhi Dos hamlon ke prati kamzor hai. EPC deta anurodhon ko hal karne mein DNS ke saath aisi hi pranaali ka upayog mein, ONS root sarvar Dos hamle ke liye asurakshit ho jaate hain. EPCglobal Network ke saath shuruaat karne ki yojana bana raha koi bhi sangathan yeh gyaat hone par thithur jaaega ki EPCglobal Network ke buniyaadi dhaanche mein DNS ke samaan hi suraksha kamjoriyaan hain.