Gary Gale

The problems started the moment GPS became a commodity and made the transition from the car to the mobile device. Nowadays, GPS can be found in a vast range of smartphones and navigation is possible without being confined to your car. Of course, it's not always a great experience. GPS works best when there's a direct line of sight to the satellites whizzing around over your head and there are times when you just can't get a GPS lock. A-GPS was devised to help with such situations, allowing your location enabled to device to take advantage of a variety of other sensors, such as cell tower and wifi triangulation technologies.

But even then, GPS just doesn't work indoors most of the time and indoor location and routing has become something of the Holy Grail for navigation technology vendors. Granted there have been lots of technologies developed which use non A-GPS technologies such as RFID and other near field sensors. But so far these all require a not insignificant investment to install and require specialist devices to take advantage of; none of which are as ubiquitous as the combination of smart phone and GPS.

Maybe we're looking too deeply at this challenge. Take a category of location that lots of people go to, such as shopping malls, where GPS usually isn't available, and map each mall to a high degree of accuracy, both in terms of the layout of the mall and in terms of the stores and concessions in that mall. Add in key features, such as multiple levels, staircases, escalators and lifts and you can build a spatial map of the mall which doesn't need sensors. Simply tell your phone where you are and where you want to go and you can provide simplistic directions, without the need for GPS.

With Nokia, Google, Facebook and a whole host of other players recognising the inherent value in the concept of Places and Points Of Interest (POIs), it's good to see that the World Wide Web Consortium (W3C), the standards body of the Web, is getting involved. On the 30th. September 2010, the W3C Points Of Interest Working Group (POIWG) was launched with a "mission to develop technical specifications for representation of POI information on the Web". I should pause to make a brief disclaimer here; I'm sitting on the POIWG as part of my day job with Ovi Places at Nokia.

Of course, in order to develop those technical specifications, we need to define what a POI is in the first place. There's a lot of acronyms flying around (3 in the first paragraph of this post alone) and a lot of conflicting terminology further confusing the matter. Even the most cursory of glances through Web content on this topic shows the terms Place, Location and POI being used interchangably and so as part of the discussion I tried to codify the difference between, and most importantly the inter-relationships between, these three seemingly straightforward terms. The genesis for this post first appeared on the POIWG public mailing list last week (and W3C working groups conduct their business as much as possible in public) but I've fleshed it out in a bit more detail here.

The popular press and media likes nothing better to poke fun at people who seem to ignore their own senses and instead rely on their GPS sat-nav systems, which frequently results in people ending up in the middle of fields, in the middle of rivers or even, in extreme cases, almost driving off of the edge of a cliff.

But the strangest example of this sort of behaviour was in the first reports of recent events on the border of Costa Rica and Nicaragua that seemed to implicate Google Maps as justification for Nicaraguan troops crossing the border into Costa Rica and raising the Nicaraguan flag on Costa Rican territory. The dispute seems to hark back to the 1850's where the contested border between the two countries followed the course of the San Juan River, the course of which has since moved somewhat, as rivers are wont to do. Costa Rica asserts their sovereignty on the disputed land based on the 1850's arbitrated border which follows the course of the river and Nicaragua asserts theirs based on the fact that the river has moved so some land must be theirs.

This is mercifully brief follow up to my previous post on British Airways proscriptions on enabling flight safe mode on your mobile phone and hails jointly from the departments of "be careful what you ask for, it might come true" and "they didn't really mean to say that ... did they?" ...

On this morning's flight from London Heathrow to Berlin's Tegel the usual flight safety announcement was made, but with a couple of significant, if contradictory, changes.

"All electrical devices should be switched off during take off, landing and when the engines are running, some devices may be used after take off, please see High Life magazine for more information. If your mobile phone has a flight safe mode, it should be enabled now, before switching off the device and ensuring it is stowed in an overhead locker".

Ahh ... paleogeography and neogeography; will the battle never end? The latter is a term used to refer to the combining of online mapping with data, incorporating classic cartography and GIS and exposed via Web 2.0 style mashups. The former is a term with dual meanings; one referring to the study of past and ancient geography and one being a pejorative to refer to the opposite and inverse of neogeography.

Both terms have their own entries on Wikipedia ... at least they used to. Towards the end of September 2010 the neogeography entry on Wikipedia was deleted with the justification ...