>> They say there's an app for everything and now there's one to help protesters in Russia get out of jail. It's aimed at anti-Kremlin demonstrators who run the regular risk of being detained by the police. They can use the digital function to instantly tell others where and when they've been handcuffed.

The notification system is called Red Button. It's a collaboration between a Russian company, a human rights group, and an opposition movement. It automatically transmits the location and emergency contact details of a detained protester. The idea is that it should then allow others to act quickly to help free them.

It'll include details of the police station where the individual is being held. And is linked to a special Twitter page that will generate maps and notifications, allowing users to track how protests unfold. President Vladimir Putin is the most popular politician in Russia by a long way. But opponents argue he keeps a check on dissent through control of the media and by limiting protests.

Russia faces a presidential election next year which Putin is expected to contest. Large anti-government protests shook the country last month and more are in the pipeline. Red Button will go live on April the 29th, the day when the pro-democracy movement Open Russia has called for nationwide marches against the government.