Intel is betting big on the future of human interfaces with a $21 million (143 million kronor) investment in Tobii, a Swedish company that has been working for years on eye-tracking laptops and other devices. A 10% stake, it implies a valuation of around $200 million for the 12-year-old company. In 2007 Tobii raised $14M, then in 2009 another $26.8M, and the $21M from Intel Capital continues that trend of steady R&D funding.The news, announced by co-founder and VP John Elvesjö and reported by Computer Sweden, comes on the heels of Tobii’s newest eye-tracking device, which was announced a week ago at CeBit. The timing probably isn’t a coincidence.