Atrua Technologies, a developer of intelligent touched-based controls for mobile phones, has received $4 million of funding.

This Campbell, CA, company specializes in input systems that allow for both fingerprint authentication and touch navigation on mobile devices. It’s technology can offer the same fingerprint-driven password protection that laptops have featured for the past couple of years.

We wrote about this company when it raised $9 million in its first round.

Earlier this month, Atrua announced that Bird, China’s top producer of mobile phones, selected Atrua’s fingerprint touch control technology for use on their phones:

They do, however, face stiff competition in the fledging “touched-based controls” industry. AuthenTec, a publicly traded company out of Melbourne, already holds a significant amount of market share. They claim to have shipped more than 15 million fingerprint sensors over the past year and a half.

The funding was from several investors: Nokia Venture Partners, Ericsson Venture Partners, NeoCarta Ventures, and Shanghai Hua Hong International.