About 1 million people are expected to flock to Houston for 10 days of Super Bowl-related activities and more than 100 million people are expected to watch the Feb. 5 game on television. Officials have been working for more than a year to perfect a surveillance-based approach, more sophisticated than in past years, that includes surveillance cameras, overhead helicopters, and Houston police.

IBM signed a research initiative with the Food and Drug Administration to research whether blockchain technology can be used to securely record and share medical data.