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Welcome to TechLife on the BBC World Service, the program about technology and its impact on our lives. I'm Zoe Kleinman, and this week we're looking at satellite navigation and the

worrying increase in cases of interference. How could this affect shipping and aviation safety

and what can be done about it?

I'll be finding out about digital archiving,

what should be saved for the future and how to do it.

If you're a well-known person on Wikipedia,

your photo might be getting a refresh.

And the tiny islands in the North Atlantic

harnessing the power of the moon. We start today with a problem that's affecting technology which many of us use in our travels,

but it's also critical to the safety of ships and aircraft around the world.

I'm talking about satellite navigation.

Three United Nations agencies have joined together to warn with grave concern about an increase in interference in sat nav signals.

The interference comes in the form of jamming and spoofing that disrupts global navigation

satellite systems. These are constellations of Earth-orbiting satellites,

providing positioning, navigation and timing services worldwide.

...