Is M.Des interaction design after B.Tech ECE a good choice?

If your a prospective candidate of Interaction Design, I would recommend you to check out the M.Des programme in Interaction Design offered by the Institute of Design at JK Lakshmipat University: About M.Des in Interaction Design at JK Lakshmipat University The 2 Year Programme in Interaction Design

After ECE, it won't be very helpful much. You may have to change career line completely. You can pursue any specialisation in Design like Product, Transport etc. But it totally depends on you. If you are ready for such a change then it will be a good choice.

Candidates having M.Des degree can work as designers in automobile and mechanical engineering companies. Automobile designer, Ware house designer, ceramic designer, PUE designer, quality control designer are some of the designer jobs available in these companies. Companies like BMW, Volkswagon, Hero