The Key System (or Key Route) was a privately owned company that provided mass transit in the cities of Oakland, Berkeley, Alameda, Emeryville, Piedmont...

Key System may refer to: Key telephone system, a multiline telephone systems typically used in business environments Key System, a defunct transportation...

The Master Key System is a personal development book by Charles F. Haanel that was originally published as a 24-week correspondence course in 1912, and...

telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system (KTS) to...

Cryptographic systems may use different types of keys, with some systems using more than one. These may include symmetric keys or asymmetric keys. In a symmetric...

more expensive) system has two cylinders in each lock, one for the change key and one for the master key. Master keyed lock systems generally reduce...

A smart key is an electronic access and authorization system that is available either as standard equipment or an option in several car designs. It was...

or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token...

Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a...

that are keyed alike; one key will open every door. A keyed-alike system is different from a master key system as none of the locks have a key that can...