Isis, the mobile electronic-payment system that is being tested in Salt Lake City, is extending the length of a promotion to entice more users.
Isis customers can now ride Utah Transit Authority buses and trains for free through March 31. The promotion originally ended Jan. 31.
Isis (pronounced eye-sis) can be used with certain Android smartphones (and in the future, iPhones) that have a special SIMM card installed. After an app also is installed, users can purchase goods and services at many retailers by just tapping their phone on a special mobile-wallet electronic reader.