Smartphones are powerful tools for demonstrators, but bringing yours along does come with risks. Here are our top tips for staying safe.

Your phone comes with strong built-in spam protection—you just need to turn it on. Here's how to do it on both iPhone and ...

Protesting is your right, but it can be dangerous, especially now. Before you step into the crowd, we show you how to make ...

Abstract: This letter focuses on a safety-critical solution to equality-constrained nonlinear programming, where the cost and the constraints vary continuously over time. To address this problem, we ...