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J1 and J2 Connection to ecosystem

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Seamless Integration with iSmarch J1 & J2 Smartwatches for Correctional Facilities



Welcome to the cutting-edge realm of correctional facility management, where iSmarch leads the charge with our innovative J1 and J2 smartwatches. Engineered to redefine inmate monitoring, these smartwatches integrate effortlessly into your facility’s ecosystem, offering a sophisticated blend of security and operational efficiency.

At iSmarch, we understand the importance of a seamless and secure environment within correctional facilities. Our smartwatches transcend traditional monitoring methods, providing a comprehensive solution that empowers facility management through technology. In this era where connectivity is key, the J1 and J2 smartwatches are not mere gadgets but pivotal components of a holistic inmate management system.

Broadcasting Protocol Overview

The cornerstone of our smartwatch functionality lies in our robust broadcasting protocol. Designed meticulously to ensure flawless connectivity, this protocol is the conduit through which the J1 and J2 smartwatches communicate with Bluetooth gateways within your facility.

What is the Broadcasting Protocol?

Our broadcasting protocol is a set of digital instructions and data formats that enable the smartwatches to send critical information to the Bluetooth gateways. This information includes vital signs, positional data, and other relevant inmate metrics. The protocol ensures that data is transmitted securely and efficiently, providing real-time insights essential for modern correctional facility operations.

How Does the Broadcasting Protocol Work?

The protocol employs a structured format, starting with a unique header ID that identifies each data packet as originating from an iSmarch smartwatch. Following this, the packet contains various bytes of data, each representing a specific piece of information. For example, one byte may carry blood oxygen levels, while another may contain activity intensity metrics. This design allows for a modular and scalable approach to data broadcasting, enabling facilities to customize data collection according to their needs.

Key Components of the Protocol

  • Header ID: A unique identifier that ensures data integrity and proper routing to the receiving gateway.
  • Health Metrics: Including blood oxygen, heart rate, and stress levels, providing a comprehensive overview of an inmate’s well-being.
  • Positional Data: Utilizing built-in beacons and RSSI (Received Signal Strength Indicator), the smartwatches can transmit precise location information within the facility.
  • Environmental Interaction: Data on how inmates interact with their environment, such as movement patterns and activity levels.

Through this broadcasting protocol, iSmarch’s smartwatches ensure a continuous stream of valuable data, fostering a safer and more controlled correctional environment. In the following sections, we will delve into how this technology can be integrated into your facility’s ecosystem, enhancing the precision of inmate monitoring and the efficacy of facility management.

Stay tuned as we explore the seamless connectivity and unparalleled advantages that iSmarch smartwatches bring to the forefront of correctional facility innovation.

Enhanced Security with Cutting Alarm Feature

Our smartwatches are now equipped with an innovative cutting alarm feature, a critical enhancement in inmate monitoring. This feature is designed to issue an immediate alert if the smartwatch’s strap is tampered with or cut.

Cutting Alarm Integration

The smartwatch strap is constructed with conductive materials embedded within the layers. When the integrity of the strap is compromised, the smartwatch detects a break in conductivity and activates the alarm protocol. This alert is immediately broadcasted to the facility’s security system, ensuring swift response to potential security breaches.

cut alarm tamper proof

Advantages of the Cutting Alarm

  • Immediate Response: The alarm allows for a quick reaction to tampering, which is vital in preventing escapes or other security incidents.
  • Deterrent Effect: The mere presence of this feature can deter inmates from attempting to tamper with the smartwatch.
  • Continuous Monitoring: The cutting alarm is part of the real-time monitoring suite, ensuring that all security aspects are covered.

Built-In Beacons for Inmate Positioning

A significant advantage of the J1 and J2 smartwatches is their built-in beacon technology, which allows for highly accurate inmate positioning within the facility.

Graphic representation of iSmarch smartwatch's indoor positioning feature with Bluetooth gateway connectivity in a correctional facility

How Inmate Positioning Works

The built-in beacons emit signals that are detected by the Bluetooth gateways using RSSI. The strength of the signal received is indicative of the distance between the smartwatch and the gateway, enabling a precise location to be calculated. This information is essential for maintaining order, ensuring safety, and monitoring inmate movements within the facility.

Accessing Positional Information

Positional data is included in the broadcasting protocol’s data packets, which are transmitted to the gateways. Facility staff can retrieve and interpret this information through the gateway interface, translating it into actionable insights. For instance, if an inmate moves into an area they are not authorized to be in, staff can respond promptly.

Advantages of RSSI Technology

RSSI technology offers several benefits, including:

  • Low Power Consumption: The beacons are energy efficient, ensuring the smartwatches have a long battery life.
  • Real-Time Tracking: Staff can monitor inmate movements in real-time, an invaluable feature in dynamic prison environments.
  • Scalability: As the facility grows or changes, additional Bluetooth gateways can be added to extend coverage and granularity of tracking.

Incorporating these built-in beacons, the J1 and J2 smartwatches offer a comprehensive solution for inmate tracking that is both advanced and user-friendly. This innovative approach to inmate positioning is just one of the many ways iSmarch is revolutionizing correctional facility management.

Enhanced Accuracy with Additional Beacons

iSmarch’s J1 smartwatches are designed to work in concert with the correctional facility’s broader ecosystem, leveraging additional beacon technology to significantly enhance the accuracy of indoor positioning.

Integration with Extra Beacons

The J1 smartwatches not only have built-in beacons but also can connect to external beacons deployed within the facility. This dual-beacon system serves to refine the inmates’ location data by providing additional reference points for triangulation, thereby improving the precision of the indoor positioning.

How to Connect with Extra Beacons

To utilize this feature:

  1. Beacon Deployment: Strategically place extra beacons throughout the facility, ensuring they cover all necessary areas for comprehensive monitoring.
  2. Beacon Registration: Register these beacons within the smartwatch system, assigning each a unique ID that corresponds to its physical location.
  3. Configuration Update: Update the broadcasting protocol configuration to include the IDs and signal information of the additional beacons.
  4. Data Collection and Relay: The smartwatches will collect signal strength data (RSSI) from both built-in and external beacons, relaying this information to the Bluetooth gateways.

Data Utilization

The additional data points provided by the extra beacons allow for:

  • Advanced Tracking: More accurate real-time location tracking of inmates, which is critical in maintaining security and operational protocols.
  • Movement Analysis: The ability to analyze movement patterns over time, identifying potential security vulnerabilities or inmate needs.
  • Zone Monitoring: Enhanced monitoring of specific zones within the facility, allowing for automatic alerts if inmates enter or leave certain areas.

The added layer of precision in location tracking fortifies the facility’s security measures and aids in the effective management of the inmate population.

Technical Specifications and Configuration

The technical underpinnings of the J1 and J2 smartwatches are what enable their advanced capabilities. Understanding these specifications is key to effective deployment and utilization.

Broadcasting Protocol Contents

The data transmitted by the smartwatch includes:

  1. Blood Oxygen Saturation: This is a measure of how much oxygen the blood is carrying as a percentage of the maximum it could carry.
  2. Breathing Rate: The number of breaths per minute, providing an indication of the inmate’s respiratory status.
  3. Stress Level: Quantified as a value between 0-255, with higher values indicating greater stress or exertion levels.
  4. Heart Rate Variability (HRV): Indicates the variation in time between each heartbeat, which is a measure of the inmate’s autonomic nervous system.
  5. Activity Intensity: This reflects the level of the inmate’s physical activity and is particularly useful for tracking energy expenditure and overall activity levels.
  6. Step Count: The number of steps taken by the inmate, offering a straightforward metric of movement within the facility.
  7. Body Temperature: Provides the inmate’s current body temperature, which can be vital for health monitoring.
  8. Heart Rate: The number of heartbeats per minute, a fundamental measure of heart health and physical condition.
  9. SOS Alerts: Triggered by a long press on the smartwatch’s physical button, indicating an emergency situation.
  10. Battery Level: Indicates the remaining power percentage of the smartwatch, ensuring that it is always operational.
  11. Cutting Alarm: A binary value where 0 means the strap is intact, and 1 indicates the strap has been cut, triggering an immediate alert.
  12. Device Name: Identifies the specific device, which is useful when managing multiple devices.


Each data point is associated with a specific byte within the broadcast signal, ensuring a structured and interpretable format for data transmission.

Utilizing the Protocol

Customers can leverage the broadcasting protocol in the following ways:

  1. Health and Safety Monitoring: Vital signs like heart rate, blood oxygen saturation, and body temperature can be monitored to ensure the well-being of inmates. Alerts can be set up to notify staff when certain thresholds are crossed.
  2. Behavior Analysis: Activity intensity, stress levels, and step count can provide insights into inmate behavior patterns, potentially identifying abnormal activities or stressors within the facility.
  3. Emergency Response: The SOS feature and the cutting alarm ensure that immediate action can be taken in case of an attempted escape or other emergency situations.
  4. Operational Efficiency: Battery level monitoring helps in maintaining the operational readiness of the smartwatches, minimizing downtime due to charging requirements.

Connection and Configuration Process

  1. Device Scanning and Pairing: Facilities start by scanning for the J1 or J2 smartwatch using their Bluetooth gateway. Once detected, the devices are paired, utilizing the unique broadcasting header and company ID to ensure a secure connection.
  2. Setting Up Data Reception: The Bluetooth gateway is configured to interpret the structured data packets based on the broadcasting protocol. This involves mapping each byte to the corresponding data point within the gateway’s software.
  3. Custom Alerts and Thresholds: Facilities can set up custom alerts for each data point, such as the cutting alarm or health metrics, defining actions for when certain values are detected.
  4. Data Integration: The received data can be integrated into the facility’s existing management systems, allowing for real-time tracking and historical analysis.

The broadcasting protocol provided by iSmarch offers a sophisticated and comprehensive approach to inmate monitoring, enabling correctional facilities to maintain security, efficiency, and inmate health through advanced technology.

Smartwatch and BLE Gateway Connectivity

Smartwatch connect to back server

Connecting our smartwatches to your Bluetooth gateways is a straightforward process that allows you to leverage the full suite of features offered by our devices, including the new cutting alarm and support for multiple frequencies such as EU868, US915, AU915, AS923 ,and more.

Frequency Support

Our smartwatches support a variety of popular frequencies, providing the flexibility to choose the most suitable Bluetooth gateways to match your facility’s infrastructure.

Configuration and Setup

The configuration setup process involves several key steps:

  1. Frequency Selection: Choose the appropriate frequency band that matches your Bluetooth gateway’s specifications and regional regulations.
  2. Device Pairing: Initiate the pairing process by scanning for the smartwatch from your gateway’s interface. This will establish a secure connection using our private broadcasting protocol.
  3. Protocol Configuration: Input the protocol details into your gateway system, which includes setting up the data structure as per the broadcasting protocol’s specifications. This will enable the gateway to interpret the incoming data correctly.
  4. Data Reception: Once configured, the gateway will start receiving data packets from the smartwatch. These packets contain information such as vital signs, positional data, and alerts from the cutting alarm feature.
  5. Alert Setup: Configure the gateway to recognize the cutting alarm signal and set up the desired response protocol within your security system.

Ensuring Secure Data Transmission

We understand the importance of data security in a correctional facility context. Our private broadcasting protocol ensure the data transmission from the smartwatches to the Bluetooth gateways is secure and inaccessible to unauthorized entities.

Advantages of iSmarch's Connectivity Solution

The iSmarch J1 and J2 smartwatches offer a range of advantages that stem from their advanced connectivity features, designed to meet the rigorous demands of correctional facility management.

Real-Time Inmate Monitoring

The smartwatches provide continuous, real-time monitoring of inmates, delivering vital data to the facility’s management system. This includes health metrics such as heart rate and blood oxygen levels, movement data like step count and activity intensity, and critical alerts from features like the SOS signal and the cutting alarm.

Enhanced Indoor Positioning

With the integration of built-in and external beacons, the J1 smartwatches offer superior indoor positioning capabilities. The use of RSSI data from multiple beacons allows for precise triangulation of an inmate’s location within the facility, enabling swift response to potential incidents and improving overall security measures.

Scalable and Flexible System

The J1 smartwatches are designed to be scalable, accommodating facilities of various sizes and complexities. The flexibility of the broadcasting protocol also allows for the integration of new features and updates, ensuring the system remains at the forefront of correctional technology.

Robust and Secure Data Transmission

Utilizing private broadcasting protocols, the J1 and J2 smartwatches ensure that all transmitted data is secure and protected. This commitment to security is paramount in a correctional environment where data integrity and confidentiality are crucial.

The connectivity solutions provided by iSmarch are more than just components; they are part of a comprehensive system that enhances the safety and efficiency of correctional facility operations.

Case Studies and Success Stories

To illustrate the impact of the iSmarch J1 smartwatches on correctional facility operations, we present a series of case studies and success stories from facilities that have implemented our technology.

Success in Security and Efficiency

  • Quick Response to Emergencies: Facilities report that the SOS and cutting alarm features have drastically reduced response times to emergency situations, potentially preventing escapes and ensuring the well-being of both staff and inmates.
  • Improvements in Behavior Tracking: The detailed activity and health monitoring capabilities of the J1 smartwatches have provided valuable insights into inmate behavior, aiding in the development of rehabilitation programs and the reduction of incidents within the facility.
  • Operational Cost Savings: With the enhanced tracking and monitoring capabilities, facilities have been able to optimize staffing and reduce operational costs, all while maintaining high security standards.


These real-world applications demonstrate the tangible benefits that the iSmarch J1 smartwatches bring to correctional facilities, affirming their status as a leading solution in the industry.


The iSmarch J1 and J2 smartwatches represent a significant advancement in correctional facility management. By integrating cutting-edge IoT technology, we have created a system that not only enhances security and operational efficiency but also supports the well-being of inmates. With real-time monitoring, advanced indoor positioning, and a secure, scalable system, iSmarch is setting new standards in the industry.

As we continue to innovate and expand the capabilities of our products, we invite correctional facilities to join us in embracing a smarter, safer approach to inmate management. With iSmarch, the future of correctional facility management is here.

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