Your bus route goes to very rural areas, where agents often refuse transactions because they run out of money. Since you always travel from the city, you consider registering as a cash courier to supply the agents money and make an extra commission.
What should you do?
You hope transporting large volumes of cash won't attract thieves. But your bus is secure and the commission is good. You decide to try.
You learn that if the phone network goes down, you won't be able confirm cash drop-offs. You decide the commissions aren't worth the risks.