The crossbody carry position is itself a meaningful security measure. It keeps the bag in your line of sight and against your body, rather than letting it hang behind you. Wearing the bag in front of your body, rather than at your hip, adds another layer of awareness in particularly crowded spaces. Zippers that face toward you rather than away make opportunistic access by others significantly harder. Beyond the carry position, keeping your highest-value items, like your passport, cards, and phone, in interior pockets adds a secondary layer of protection. In markets, transit stations, and any very crowded environment, keeping a hand lightly on the bag is a habit most seasoned travelers develop naturally.