Fight Fraud with SecurLOCK Equip. SecurLOCK Equip is an easy-to-use mobile app that puts the power to protect your debit cards in your hands. It allows a cardholder to control the how / where / when their payment cards are used with their mobile phone. You can turn your card on or off with the touch of a button, set location-based controls, block international transactions and set spending limits.