We live in an era where ideas can turn into vast sums of money, and then disappear, in the blink of an eye. Many of today's start-ups start with a way of changing business process and then commercialise that idea. But Nir Gabay, the founder of El-Sight, focussed on solving a very specific problem. And his hardware solution has massive implications that go far beyond his original vision. EL-Sight's core product is a mobile digital video recorder (DVR) that can securely store and transmit data.