"I know some of the people involved in Museum of the Phantom City, and they’re good people. But, in order to see the things that they want to point out, I have to go that place — well, okay. But then, once I’m there, the best way to display that information is the juxtaposition of it in front of what I’ve just traveled there to see? I don’t think so. Bottom line, maybe, is that visualizing the invisible is difficult, and might not be best expressed through the metaphor of the camera."

"What's important to me about the kinds of things we were doing with Area/Code — and all the designers around us — is that we were building systems in the middle of the data, some systems that gave us a way to read, and reasons to read it. The stories we were telling with locative games were fiction, but as always, good fiction describes the real world rather precisely."

"playmakers, a 35 minute documentary, is the culmination of a six month project following the progress of Hide&Seek; game designers Alex Fleetwood and Holly Gramazio through the development of a new game. The documentary was filmed over the first 6 months of 2009 and premiered at the Sheffield Documentary festival. Playmakers will be available to download and view on the 5th of May 2010.

Over the last 50 years play has become an increasingly private activity. Now it is bursting back onto our streets. playmakers explores the emerging area of pervasive games it examines the implications of reclaiming play into the public domain and shows the possibilities offered by new technologies.

Playmakers investigates four main themes:

Part 1: Play…

Part 2: Public space…

Part 3: Technology…

Part 4: Theatre/art…"

[See also: http://playmakers.org.uk/ ]

"Geohashing is an outdoor locating activity which involves visiting a set of coordinates generated by a hashing algorithm. It was invented by Randall Munroe, and first mentioned in the form of its algorithm in the xkcd webcomic, #426 in May 2008."

"I love the idea of geohashing – the arbitrary nature of the algorithm has a purity to it that appeals to me. But I haven’t gone to find a hash yet. A cache implies that someone else thought a spot was worthy, in some way, to be encountered & appreciated – a hash has none of that baggage, for better or worse.

"It's an ambitious game that uses the iPhone's GPS, the camera and the speaker to create a sort of ARGish geo-cachingish mash up for families. You pick a park, head down there with the kids and run around solving clues and puzzles and trying to find the magical creatures...The best bit as far as the kids were concerned were these brilliant little photos created by standing in exactly the right spot...It seems to make sense in an emerging post-digital world. It takes something you can't do on a screen (going outside and run round a park) and merges it with something you can't do with twigs or paper (animate creatures over pictures etc). But also it takes the best bits of those worlds, going to the park is a good fun thing and gps and camera etc uses the best of the iPhone. That's smart and importantly it doesn't feel forced or false. Throw in gaming on the top and you've got a very interesting mix."

"Like geocaching, letterboxing involves finding a container in a hidden location. But rather than reaching certain coordinates with a GPS, you find the letterbox by following written clues. Some of them say things like, “Turn left at the large tree stump.” Others might be a bit more cryptic. Sometimes a compass is helpful. The boxes are usually hidden, similar to geocaches, so some searching in the end is common, but they are usually easy to find."

"intriguing pastime combining navigational skills and rubber stamp artistry in a charming "treasure hunt" style outdoor quest. A wide variety of adventures can be found to suit all ages and experience levels. Click on the desktop items above to explore th