New Delhi, Dec. 2 -- TMC MP Kalyan Banerjee, joined the opposition ranks to take on the Central Government on the activation of the Sanchar Saathi app on mobile headsets. The TMC leader said on Tuesday that mandating such an app by the government is completely illegal and unconstitutional.

He said, "This is totally absolutely illegal. This will be completely in breach of privacy. For you (the government) to detect cybercrime, transparency is needed. You cannot detect cybercrimes by entering my phone; the government has no right to know my personal mobile details. This is totally illegal and totally unconstitutional. You know, when the Aadhar was introduced, we said that Aadhar cards cannot be made compulsory, because the information woul...