Federal Bureau of Investigation agents have finally ditched paper files for a new computer system, an effort that took 12 years and cost more than $600 million. The system, called Sentinel, includes elements resembling Web browsers, with tabs and movable windows, and forms that are filled out in a question-and-answer format similar to consumer tax software. The FBI announced the completion of the system Tuesday after testing to work out bugs. Portions of it were implemented in recent years, and the bureau recently took the final step of shutting down its old system, which relied heavily on paper. Read the full story at The Wall Street Journal.