In most of the developing world, if a person faces an emergency situation—like getting mugged, being beaten, getting molested, getting lost in an unknown place, meeting with an accident, needing a safety guide, and so on—there is hardly any help available. The longer the person stays in the emergency situation, the more the probability of losing life or belongings increases. In countries like India, the ratio of people to police personnel is 125:100000, and the roads are heavily congested with traffic during peak hours. Hence, most of the time police are unable ...