
Three young entrepreneurs claim to have invented the world's first "unstealable" bike. The "Yerka" forms a lock out of its own frame.

The three Chileans -- Andrés Roi Eggers, 23, Juan José Monsalve, 24, and Cristóbal Cabello, 22, invented the bike while they were still studying engineering at university. They left their courses to pursue the project full time.

The Yerka's down tube splits in two and allows the seat tube to be inserted, creating a lock out of the frame. The only way to steal it is to break the lock, and therefore the bike.

The locking operation takes only 10 seconds, according to the Yerka team. The wheels are secured with nuts that only the owner has a key to.

Almost 200 bikes have been sold via a worldwide crowdfunding campaign, with a further 100 on order for sale in Chile. The entrepreneurs are seeking $1 million in investment to take the product global from 2017.




