Video game emulator Delta’s decade-long struggle against the iOS app store began with a school-issued TI-84 calculator. When Riley Testut was a sophomore in high school, he showed his friends how to load illicit software onto their bulky graphing calculators. Such behavior was generally discouraged at school, but he wasn’t plotting to cheat on a […] © 2024 TechCrunch. All rights reserved. For personal use only.