Jeremy Gordon and Caine Kamau talk about their start-up Flashcast, a location aware advertising tool used on Nairobi’s matatus, that can also be used to track them; The interview covers: how the location aware advertising platform works on the matatus; who uses matatus in Nairobi and therefore who is being targeted; the advertisers attracted so far; how many buses are involved and the total number of buses; and its capability for tracking bus movement and how it might be used,