Secure Mobile IDs for Smart Devices. Over-the-air communication with session based keys secured by AES 128/SHA-256. Mobile IDs are signed and encrypted using AES 128. From devices with Android 4.3+ using Bluetooth® Smart, Android 4.4+ or iOS 7.0+ using Bluetooth® Smart (i.e.: from iPhone® 4S). Price per ID. Minimum order quantity is 25 credentials.