In the past, intercoms were fairly simple: there would be a call button and perhaps a mechanism for remotely unlocking a door, and that was it. Eventually, end users and manufacturers began to recognize the value of being able to see who was at the door rather than relying simply on sound, and cameras became part of the equation. While cameras helped improve security, the emphasis was still mainly on the intercom aspect.
Today’s video intercoms have continued to evolve and touch many different aspects of security, making them tremendously valuable in the overall physical security ecosystem.