Taloussanomat.fi (16.4.2014): Nokia's dirty secret: The untold story of a production-ready tablet from 2001
Around 1000 pieces of the Nokia M510 web tablet were produced in 2001 – nine years before the first iPad. But according to Nokia´s market research the consumers weren't ready for the device.

The tablet has been a well-kept secret up until now. Before the publication of the original Finnish language article there were no mentions of the M510 on the Internet.