ChronosGuard: Temporal Anomaly Detection System

ChronosGuard is a niche security system designed for individuals or small businesses seeking an advanced, yet accessible, method of anomaly detection. Drawing inspiration from the concept of temporal disruption in Asimov & Silverberg's 'Nightfall' and the non-linear narrative of 'Memento', ChronosGuard focuses on identifying deviations in the -timing- and -sequence- of events recorded by various sensors.

Concept: Instead of solely relying on traditional rule-based triggers (e.g., 'if motion detected and door open, then alert'), ChronosGuard builds a temporal profile of normal activity over time for each sensor. It then uses machine learning to identify events or sequences of events that deviate significantly from this established timeline. For instance, a door opening -before- motion is detected in a normally occupied room might be flagged as an anomaly, even if individually these events aren't inherently suspicious. Similarly, a sequence of sensor activations occurring at an unnaturally rapid or slow pace could indicate tampering or an unusual intrusion method.

How it Works:
1. Sensor Integration: The system can integrate with readily available, low-cost sensors (e.g., PIR motion sensors, magnetic contact sensors for doors/windows, sound sensors, even basic smart home device logs). These sensors feed data (timestamped event type) into the ChronosGuard core.
2. Temporal Profiling: Over an initial learning period, ChronosGuard establishes baseline temporal patterns for each sensor and combinations of sensors. This includes typical inter-event times and sequential activation orders.
3. Anomaly Detection: When new sensor data arrives, it's compared against these established profiles. Sophisticated statistical analysis and machine learning algorithms (easily implementable with libraries like Scikit-learn) are used to identify deviations. The system prioritizes anomalies that suggest a temporal manipulation or a highly unusual sequence of actions.
4. Alerting & Review: Upon detecting a significant temporal anomaly, ChronosGuard triggers an alert. The system also presents a 'temporal snapshot' of the anomalous event sequence, much like Leonard Shelby in 'Memento' might try to piece together fragmented information. This allows the user to quickly understand the context of the deviation and determine if it warrants further investigation. The 'low-cost' aspect comes from leveraging open-source software and inexpensive hardware. The niche aspect lies in its focus on temporal sequence analysis, which is often overlooked in consumer-grade security. The high earning potential stems from offering a unique, advanced layer of security intelligence that can be marketed to individuals and small businesses who are cybersecurity-conscious but lack enterprise-level budgets. It can also be packaged as a premium add-on to existing smart home or security setups.