Dopplr "badgegeist" Physical Prototype by Jerakeen, originally uploaded by blackbeltjones.

Tom mocked this up really quickly this morning.

It’s a dynamic version of our logo showing the city colours of where people are on trips to right now. It’s our equivalent of that LED sign that Google used to have on their wall showing current search queries… except a lot slower…

Currently it’s mocked-up using the crystal-case packaging of a Jawbone headset and an iPod Touch that’s connected over wifi to the script that generates the logo.

Here’s a Flickr video (or “long photo”) showing the componentry…

We’re going to try and make a bigger version for our office wall with RGB leds and an arduino as a summer project… Stay tuned!

badgorama, originally uploaded by jerakeen.

As MattB said - it’ll remind people of a certain age (including us) of a ZX Spectrum loading screen…

For Facebook users, here’s something, via MattB, that you can use to plug Dopplr into the social-networking site:

Go here and add the app (when asked, you’ll need to check the box to stay permanently logged in).

You’ll be asked to sign in to Dopplr with your usual login details. This is so we can associate your Dopplr account with your Facebook profile ID.

Now look at your Facebook profile page and you should see the ‘Dopplr’ box. This will update every day with your current location. On days when you’re travelling, we’ll add a news item to your mini-feed telling people where you’re going (or returning) to.

Please keep in mind that we’re still working on this. But do let us know if you have any difficulties. You can also discuss Dopplr on the Facebook group.

Tom Insam has been helping us behind the scenes while we design the future Dopplr API. Using Zimki, a preview release of the API and some javascript code, he’s created a couple of Google Earth dynamic overlays that visualise your trips and the location of your fellow travellers.