Today, UnitedHealthcare announced that it is launching a "Blue Button" tool to let policyholders access, download and print their personal health records from the insurer's website. UnitedHealthcare said that 12 million policyholders will be able to use the tool by the end of this year and about 26 million policyholders will be able to use it by mid-2013. MedCity News, Healthcare IT News.