---
title: Glossary
description: Key terms and concepts of Technis
---

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1. [Technis](https://support.technis.com/?hsLang=en)
2. [Getting started](https://support.technis.com/getting-started?hsLang=en)

September 1, 2025

# Glossary

### Key terms

- **Site (Installation)**: A physical infrastructure where sensors are installed. Typically represents a building (e.g., train station, store) or an event.
- **Zone**: A physical area within a site for which metrics are tracked. Zones are hierarchical - for example, a building can have multiple floors, and each floor can have multiple areas.
- **Passage**: A passageway that connects two zones. Used to count people entering and leaving linked zones. Each passage has defined entrance and exit zones.
- **Cartography**: The representation of zones and passages organized in a hierarchical tree structure, essentially mapping out the physical layout of a site in the Technis system.
- **Devices (sensors)**: specialized hardware units (mats, cameras or air quality sensors) installed on-site to counting people, objects or record data about the environment.

### Reports and data 

- **Metric:** a measurement captured by devices on a particular site, in a particular zone or passage. eg. number of visitors inside a space, time spent, or CO2 levels.
- **Report**: an interactive document that can contain multiple visualizations or accompanying text.
- **Filter**: filters are used to narrow down data that qualifies as a result in a report. For example, you many want to consider only data from a particular site, zone or a passage.
- **Breakdown**: groups the results of your queries in reports by a property, allowing you to examine which properties or groups have significant impact.
- **Descriptor**: additional identifier used to refine data queries, such as gender or age group classifications.
- **Time grain**: the unit of time in which visualization will be displayed in. For example, a visualization with minutely time grain will display data for each minute of a selected time range.
- **Time range (time span)**: the range for which the data is being displayed.

### Alerts

- **Alert rule**: an expression of conditions for which an alert should be raised. For example, if the people inside a zone is more than 200.
- **Alert**: happens when an alert rule's condition is satisfied. For example, when the people inside a zone is 201. 
- **Condition**: mathematical comparison (smaller, greater, equals) that compares the current measured value of a metric with a predefined threshold.

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