Z9 Security Logo Design Project

This is what Z9 Security was looking for in their logo design

We need a logo design for the company and project "Z9 Security". Z9 Security is an open-source physical security software and hardware platform. Physical security includes:
*Access Control (card access to doors)
*Alarms/Intrusion Detection
*Video Surveillance
*Temperature/Environmental Monitoring
*Home and Building Automation
*Voice/Intercom

We would like to see conservative designs that are bold and suggest security and stability. Strong use of black and greys suggested; colors, if any, should be either muted or used sparingly, so as not to distract attention if the logo is present in an actual security application where colors may be used to call attention to actual alarms.

Obvious symbols like locks, keys, chains, shields, eyes should be avoided; there are far too many such logos in the industry.
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