Hi Sandipan,
The best combination will be an education that gears you towards developing interactive products.
There is a high demand for people who can create working electronic product prototypes as well as providing input on the design process.
If you come from an electronics background and have a sense for design plus some creative experience, you will be a great candidate for many programs. Moreover, electronics is often the most sought skill in that you can act as a mentor for others so you can have a side job as a student tutor! I know this is possible at the ID department at Eindhoven University of Technology in the Netherlands. You will have to post a letter very soon to be able to enroll for the 6-month pre-master track required for students coming from other fields.
For more information see this website:
And contact the study advisor who can answer all your questions.
All the best!
Ralph