| 摘要 |
<p>Embodiments of the present invention relate to a system for communication. The system comprises a communication device (1) suitable for use in place of a doorbell, and a server (6). The communication device (1) is capable of connecting to the server (6) over the internet and is provided with at least one recording device (14, 15), such that when the communication device (1) is activated it encrypts a first message recorded by the recording device (14, 15) and transmits the encrypted information to the server (6).</p> |
