Children surrering from cancer can get lonely due to prolonged hospitalization and treatments that keep them away from their loved ones. Amaral Carvalho, a children's hospital in Sao Paolo, Brazil, has created a teddy bear that allows kids in isolation for cancer treatment to hear audio messages from family and friends when they squeeze its paw, using messaging service WhatsApp. "ELO" means "link". Yet to see a more insipiring use of voice messaging on WhatsApp.