Parabellum leather goods, the all-American bison hide accessories brand from Mike Feldman and Jason Jones, introduce a little technology into the mix. Collaborating with Trackr, the brand applies “bluetooth, GPS, crowdsourcing” technology to a navy leather wallet and a black key fob. Using a custom made Parabellum app, both the accessory and phone beep when separated by 100 feet and a GPS location is found. In the case of sheer forgetfulness you can use the wallet to help find your phone and your phone to help find your wallet. Done. Find them here.