Described nicely here. Of course, as the writer points out, without any connectivity on the tube this is only slightly more useful than a chocolate teapot – you could use it to check service delays or whatever before you went into a station. If you were at home/work or anywhere else with a PC you could just check the TFL site. Oh, it only costs £0.59 – even if it’s only useful once I suppose that’s worthwhile. (Oh, and more about the chocolate teapot here)
About Jeremy Green
Jeremy is an independent telecommunications analyst with a strong interest in M2M/Internet of Things, with a focus on transport and Smart City applications, the use of ICT to reduce and mitigate climate change, the medium-term future of the telecoms industry, including new roles for operators, and the evolution of voice services.