A notice for all newcomers. Everything that you own is a target for theft. Your locked bike, the iPhone in your pocket, the pile of cash on your kitchen table, the iPad in your hands on the metro, your pet kitten.
So long, Sal! This is solid advice regardless. Best thing you can do to prevent theft is assume it’ll happen and be mindful to take whatever precaution to prevent it. Even if it seems in excess. Overdoing it is a healthy habit to form here.