THE FIRST RULE of foiling thieves when traveling: “Always carry everything in front of you.” So advises travel influencer Johnny Jet, adding, “Never use a backpack or have your stuff behind you or in a back pocket.”

Jet (real name John DiScala), who runs the JohnnyJet.com travel site, suggests these items.

Pocketed jacket/vest: “I have a jacket that has 20-plus pockets.” With pockets inside and outside, there’s a spot for just about anything: “iPads, passports, sunglasses, a bottle of water and more.”

Crossbody purse: It sits diagonally across your body, with the bag in front. Get a purse with a stainless-steel-based strap. “People can come up behind you and slash a regular strap.”

Money belt: This standby is a great option—“like a thin fanny pack you wear under clothing.”

Safe wallet: A wallet that blocks radio-frequency identification (RFID) technology thwarts thieves’ gadgets that can read your credit card’s info. —Maisy Fernandez