A necklace designed for babies in India could be a lifesaver - thanks to the immunisation records it stores. <br />Because infant immune systems aren't fully developed, vaccines help to protect them from the most serious of childhood infections like measles and pneumonia. <br />In rural Rajasthan vaccination rates are low - and helping to educate and remind parents is difficult. <br />Suranjana Tewari went to find out about one project linking tradition with technology to protect children's health.
