Festival-goers should expect enhanced security at Lollapalooza this weekend in Chicago, as more police, fencing, bag restrictions and airport-style screening are added to the annual Grant Park event.

More police and resident interactions in St. Louis will be captured by body cameras by the end of the year as eight area police departments jointly landed a $400,000 federal grant to equip about 260 officers with body cameras.

In San Francisco, the Union Square Business Improvement District launched an outdoor security camera program in 2012, starting with six privately-owned cameras, and it has since raised more than $3 million in grant money and outfitted 40 property owners with cameras, extending the network to around 350 cameras that share footage with police.

Officials would have a say in the policies that govern surveillance tools and would get annual reports on them – including what data was shared, with whom, where surveillance happened, whether complaints resulted, and information about costs and data breaches.

The global market for city surveillance equipment surpassed $3 billion in 2017, and it’s expected to grow at an average annual rate of 14.6 percent from 2016 to 2021, according to a report from IHS Markit.

In February, Chicago Mayor Rahm Emanuel announced a plan to upgrade security cameras and add new ones at Chicago Transit Authority (CTA) stations and bus turnarounds, which would be funded by a fee hike for Uber and Lyft ride-sharing services.

A few months ago, cities around the world anxiously awaited for the results of the Global Cities Index, which identifies the world’s top 125 cities on the basis of their ability to attract and retain global capital, people and ideas, as well as sustain that performance in the long term.