First best rule when traveling is not to carry too much of value. Leave your laptop at home if you can -- buy a cheap Chromebook ($150) with none of your personal info on it and travel with that. Traveling abroad? Don't bring your cellphone -- that's an expensive disaster even before it gets lost or stolen. Grab an inexpensive unlocked phone like the LG A275 Black Unlocked GSM Dual SIM QuadBand Cell Phone - International Version. That'll cost you less than $30 and give you peace of mind. Lose it? Who cares? Just write down (on paper, you remember paper?) important numbers you might need and travel worry free.
But what about cash and credit cards? If you listen to American Express and "don't leave home without it" as the old ads warned, you'll need a secure place to put your cards and your loot. Even your front pocket is no safety zone, which you know if you've ever strolled the exciting and precarious La Rambla in Barcelona with its aggressive pickpockets -- or the thousands of streets like it around the world. You'll want a wallet that's made more for James Bond than Ray Romano. Here it is, the Shacke Pocket Vault - Hidden Travel Belt Wallet w/ RFID Blocker. It's like carrying around a sleek safe.
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