On a recent train journey I overheard a conversation about someone who’d enjoyed the first class wine so much on a recent intercity journey that they had difficulty staying awake so as not to miss their destination. Staying awake is a problem for many commuters and for those whose destination is not the terminating station, it can be both costly and time consuming. An alarm clock is the obvious tool of choice, to solve the problem, but it’s not convenient. Helpfully some phones include alarm clock applications, but aside from the fact that they can ring a bell at a predefined time, they’re not very useful because what’s important is getting off at the right station, not at a specific time. More…