Access control system
An access control system, or ACS, is any system designed to prevent and restrict access to users. For example, a primary form of access control is only allowing users who have accounts to log in to a system or only allowing the user access to files he or she should be able to see.
Hardware and software systems may also have access control built into them, which means they require a specific security validation to allow users access or use of the hardware or software. Access control typically relies on particular security measures to determine who should have access.
Examples of access control systems
- Use of a password - A word or set of letters, numbers, and symbols.
- Access Card - Size of a credit card typically, with a magnetic strip or computer chip, swiped through or placed next to a card reader.
- Security fob - A device with a RF security chip inside, placed next to security fob reader.
- Fingerprint Reader - Scans a person's fingerprint, which is different for each person.
- Palm Reader - Scans the palm of a person's hand, which is unique for each person.
- Voice recognition - Usually requires a person to say their name, a specific sentence or series of words, to recognize the person's unique voice pattern.
- Retina Scan - A scan of the eye, specifically the retina, which is unique for each person.
- DNA scan - Much more sophisticated and futuristic, requiring sample of saliva or blood to check for and verify the person's DNA.