Yes, the Contour wireless keyboard is secured with encryption.
The communication between the dongle and the wireless product (2.4 GHz) is secured with an AES 128 bit algorithm, which is an industry standard when it comes to encrypting consumer devices.
During the pairing process, a random encryption key is generated and exchanged between the dongle and the wireless device, and the key is stored and subsequently used to secure the communication. The pairing process is kept secure by only happening upon user request and is kept within a very short range that prevents eavesdropping.