Blog
Notes from the workshop floor.
Market, technology, brand. Written by Dr. Raphael Nagel and the team. Published when something needs to be said.
March 10, 2026 · Dr. Raphael Nagel
Private Security Robot vs Human Guard: Pros & Cons
A robot does not tire. A guard does not freeze. We list each strength and weakness side by side and let the deployment decide which combination fits.
March 6, 2026 · Dr. Raphael Nagel
Most 'Made in Germany' Security Tech Is Rebadged Hikvision
A close reading of the supply chain behind the badge. Where German manufacturing actually exists in the security category and where the label is just a sticker.
March 4, 2026 · Dr. Raphael Nagel
When Insurers Will Mandate AI Surveillance: A Real Calendar
Reinsurer pressure, loss ratios, and disaster recoveries point at the same calendar. A practical look at when AI surveillance crosses from credit to mandate.
February 26, 2026 · Dr. Raphael Nagel
Computer Vision Against Construction Site Theft
Three deployment patterns, three theft profiles, three measurable outcomes. We describe what a serious deployment looks like and how to know whether yours.
February 24, 2026 · Dr. Raphael Nagel
IEC 62443 and the Perimeter: OT Standard Meets Fence
IEC 62443 is treated as a software standard. It is also a physical standard. We map the zones and conduits to actual perimeter components, where they belong.
February 23, 2026 · Dr. Raphael Nagel
Truck Yard Security Overnight: An Honest Buyer-Side Plan
Yard layout, light pollution, route patterns, and operator handoff. A buyer-side plan that decides which technology buys you the next hour of sleep.
February 16, 2026 · Dr. Raphael Nagel
Knightscope's K5 Was a UX Miracle and an ROI Tragedy
Public filings tell the whole story. A close reading of the K5 commercial arc, what it got right about adoption, and what it got wrong about unit economics.
February 10, 2026 · Dr. Raphael Nagel
CISA Physical Security for Chemical Sites: A Practical Read
The chemical sector has the tightest physical guidance under CISA. We translate the guidance into the buildouts, the staffing models.
February 6, 2026 · Dr. Raphael Nagel
How to Secure a Construction Site Overnight
Lock down, sweep, monitor, respond. Four phases, each with a checklist, each with a cost line. A working protocol that survives the first wet weekend in March.
February 4, 2026 · Dr. Raphael Nagel
Mobile Video Tower vs Security Guard: Cost Showdown
A two-column comparison. Cost per hour, coverage radius, response time, and the cases where a guard is still the right answer.
February 1, 2026 · Dr. Raphael Nagel
All-Weather Security Robots: What Outdoor Rated Means
IP ratings, ambient temperature, dust ingress, and rain detection. We translate the spec sheet language into the actual conditions a robot will see in a.
January 31, 2026 · Dr. Raphael Nagel
Is a Security Robot ROI Positive in Under Two Years?
A line-by-line payback model. In which deployments the robot pays back inside twenty-four months and in which it does not. No vendor magic, just the math.