Some embedded video and audio is only available in the UK. However, it may be that your network provider has allocated you an IP address outside the UK. You can check your connection location at www.speedtest.net .

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Unlike some Web-based phenoms, the location check-in service Foursquare has an obvious potential business model: local ads based on your geographic location, perhaps coupled with inferred interests from your previous check-ins.

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After connecting your Foursquare account to Meshu, you can customize a piece based on your location data, from check-ins worldwide, to those within a particular city, state or neighborhood.

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The company tracks your location and allows you to check-in at your favourite spots.

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If you arrive at an airport but your duffel doesn't, you can check its location online with the Trakdot app, or get its location sent to you via text message or e-mail.

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It allows a user to check in with key contacts when arriving home safely and lets guardians follow you via your GPS location.

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The big brands love this model and see location-based check-ins and gaming as a way to extend a brand from your screen to wherever you happen to be in real life.

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If your business is government related, or you just want a peaceful location in the heart of town, check into the Capitol Hotel Tokyu in the Akasaka district, a popular holdover from the 1960s (the Beatles stayed here), which was razed and replaced with a 29-storey tower in 2010.

BBC: Business trip: Tokyo