Jan 09, 2013 - Appuous is proud to introduce Keycard 1.0. Keycard locks and unlocks your Mac using an iOS device and Bluetooth(R) technology. Keycard allows you to pair your iPhone or other iOS device with your Mac to lock and unlock your computer. The app detects when you're leaving your desk, office, or room and automatically locks your computer leaving your Mac safe and secure. When you return Keycard unlocks your computer for quick and easy access. It requires no additional software for your iOS device.