Q&A: Rientro Implementation Guide

A comprehensive Question & Answer guide covering business, technical, and operational aspects of the Rientro platform.

🟢 Novice: Getting Started

Q: What is Rientro? Does it replace a GPS Tracker?

A: Rientro is a Rescue Intelligence System, not just a tracker. While standard trackers show a dot on a map, Rientro runs a multi-signal fusion engine that combines 9 inputs — GPS distance, time elapsed, walking speed, direction of travel, time of day, WiFi state, wrist detection, battery level, and heart rate — to calculate urgency levels, predict wandering paths, and identify hazards. It is designed to help you find someone within 15 minutes, not just watch them get lost.

Q: What devices do I need?

A:

• Patient: An Apple Watch (SE/Series 6 or newer) or Samsung Galaxy Watch (4/5/6) with cellular/LTE capability.
• Caregiver: Any modern iPhone or Android phone.
• Note: The watch MUST have its own cellular plan so it works when far away from the phone.

Q: How much does it cost?

A:

• Subscription: $29.99/month or $299.99/year. This covers the 24/7 server monitoring ("Watchdog").
• Trial: There is a free Drill Mode to test the full system before subscribing.
• Hardware: You buy the watch separately (from Apple, Samsung, or your carrier).

Q: What is "Drill Mode"? Do I need to pay to test it?

A: "Drill Mode" is a free simulation tool that lets you experience the full rescue system without creating an account or paying.

• How it works:
  • Tap "Continue as Guest" on the landing screen (no email required)
  • Run a simulated wandering scenario with demo data
  • Experience full DEFCON escalation from Safe → Emergency
  • Drill starts instantly — no loading wait
• What you see:
  • Real-time ghost patient moving on the map
  • DEFCON levels escalating with color changes (Green → Red)
  • Rescue siren at DEFCON 1 (Emergency)
  • Isochrone walkability polygons showing search zones
  • Full rescue command interface
• After the drill:
  • Create a free account to set up your loved one's real profile
  • Or tap "Maybe Later" and come back anytime — the drill is always free
• Why: We want you to trust the system before you pay. Dementia care is deeply personal, and we want you to see how it works before making any commitment.

Q: Do I need to re-enter data when I create an account?

A: Yes. Guest mode uses demo data only — no personal data is collected or stored. When you create an account, you'll set up your loved one's real profile (name, photo, medications, home address, emergency contacts). This ensures your data is securely stored in our database from the start, synced across devices, and ready for real emergency response.

Q: Why a subscription? Can't I just pay once?

A: No. Rientro is a service, not a product. We run a "Watchdog" server that monitors the patient's heartbeat signal 24/7. If that signal stops or the patient wanders, our computers wake up immediately. This requires ongoing server infrastructure that costs money to run every single minute.

Q: Can I monitor more than one family member?

A: Yes — with the Pro Plan, one subscription covers up to 3 family members at no extra cost. This is designed for households where both parents need monitoring, or for siblings sharing care responsibilities across multiple relatives.

Once you add a second patient, a switcher bar appears at the top of the MISSION screen showing each person's first name. Tap to switch — the live map and INTEL tab both update instantly. The system monitors all patients simultaneously in the background regardless of which one is displayed.

Free Plan users can monitor one patient. Upgrade to Pro in Settings → Subscription.

Q: Does the $29.99/month cover multiple family members?

A: Yes. The Pro subscription covers up to 3 patients — you are not charged per person. Think of it as a family safety net, not a per-device fee. Each family member needs their own watch; the subscription covers the server monitoring for all of them.

🟡 Intermediate: How It Works

Q: What is the "15-Minute Rule"?

A: Statistics show that if a wandering dementia patient is not found within 15 minutes, the risk of injury or death skyrockets. Our entire system is built to escalate alerts rapidly—from "Advisory" to "Critical" to "Emergency"—so you can intervene before that 15-minute window closes. At night (10 PM - 6 AM), the system escalates nearly twice as fast because nighttime wandering carries higher risk due to poor visibility and hypothermia.

Q: What happens if the patient enters a "Dead Zone" with no signal?

A:

1. Watchdog Alert: Special servers detect the "silence" immediately.
2. Notification: You receive a "Signal Lost" alert with the exact last known location and time.
3. Local Recording: The watch continues to record GPS data internally and will upload the "missing path" the moment it reconnects.

Q: What are "Memory Anchors"?

A: Dementia patients often wander toward places from their past (e.g., a childhood home or former office). You can pre-program these addresses into the app. If a wandering event starts, the system highlights these locations on the map for search teams to check first.

Q: How does the "Hazard Analysis" work?

A: We don't just alert you when they reach a highway; we alert you when they are heading toward one. The system calculates their walking vector and bearing. If it intersects with a known hazard (Water, Highway, Cliff), it boosts the DEFCON level earlier to give you more time to react. Conversely, if the patient is heading toward home, the system reduces urgency — preventing unnecessary alarm when they're finding their own way back.

Q: What happens if the patient takes the watch off?

A: The watch detects wrist removal immediately using built-in sensors (Apple Watch uses wrist detection; Wear OS uses the off-body sensor). You receive an instant notification. If the watch stays off-wrist for 5 minutes, the system escalates to DEFCON 4 (Advisory) — because an unmonitored patient is at risk.

Q: Does the system behave differently at night?

A: Yes. The system applies a nighttime multiplier to urgency scoring:

• 6 AM - 8 PM: Standard escalation (1.0x)
• 8 PM - 10 PM: Elevated (1.3x) — evening confusion is common in dementia
• 10 PM - 6 AM: Critical (1.8x) — sundowning hours, highest risk This means a 3 AM departure reaches emergency level in roughly half the time of an afternoon departure.

Q: How does the WiFi fence work?

A: When you set up your loved one's profile, the watch learns your home WiFi network. The moment the watch disconnects from that WiFi, the system knows they've left the building — often 10-30 seconds before GPS registers the departure. There's a 60-second grace period (mailbox, trash), then the system activates full tracking. This is the fastest possible departure detection.

Q: What is the TETHER button? When should I use it?

A: TETHER is for when you are out in public with your loved one — at a park, a store, a doctor's office. The home safe zone doesn't follow you, so without TETHER the app would send you false alerts the whole time you're together.

When you tap TETHER, two things happen at once:

• A stay-close alert activates: A small invisible boundary (about the width of a living room) forms around your loved one's current spot. If they wander away from that spot while you're briefly distracted — in a checkout line, a restroom, a waiting room — your phone alerts you immediately.
• False alarms are silenced: The app stops measuring distance from home. No more "too far away" warnings when they're standing right next to you.

Important things to know:

1. Falls and heart rate emergencies still fire. TETHER is not a total off switch. If your loved one falls or their heart rate becomes dangerous, the app goes to RED immediately — no matter what.
2. Always release TETHER when you get home. If you forget, the system stays in stand-down mode through the night and won't alert you if your loved one wanders while you're asleep. Tap TETHERED to release it when you walk in the front door. If your home WiFi is on, the watch will also release it automatically when it reconnects.
3. Stand near your loved one before pressing it. The boundary forms around the patient's current location, not yours. If you press it from across the parking lot, the boundary will be in the wrong place.

Q: Why is the map so dark? Can I switch it to a light map?

A: The dark map is intentional, and here's why it matters in a rescue situation:

• You can read it at 3 AM. A bright white map in a dark bedroom or street will temporarily destroy your night vision — the few seconds it takes your eyes to readjust can matter. A dark display keeps your eyes ready for what's around you, not just the screen.
• Critical alerts pop out. The red patient dot, orange hazard warnings, and green safe zone all stand out sharply against a dark background. On a bright map, they compete visually with roads, labels, and terrain color.
• Reduced eye strain over long vigils. If you're watching the map for hours during a wandering event, dark mode produces significantly less eye fatigue than a bright screen.
• Battery life. On OLED screens (iPhone 12 and later, most modern Android flagships), dark pixels draw almost zero power. A rescue can last hours — every minute of battery matters.

This is the same reason professional SAR software like CalTopo, Garmin Basecamp, and military tactical displays all default to dark mode. It isn't a style choice — it's a tool optimized for the mission.

There is no light mode option. The interface was designed from the ground up for emergency readability, not casual browsing.

🔴 Expert: Technical & Privacy

Q: Is my parent's location data private?

A: Yes, until it isn't. We use a "Break Glass" protocol:

• Normal Mode (DEFCON 5-4): Data is encrypted and visible ONLY to you. We (the developers) cannot see it.
• Emergency Mode (DEFCON 1): If a life-threatening emergency is confirmed, the system decrypts the live location and medical bio to share relevant data with your Emergency Contacts (Command Chain) immediately. You can then generate a shareable "Rescue Link" to send to EMS/Police to facilitate a rescue.

Q: How does the "Isochrone" feature save battery/cost?

A:

• Smart Triggering: We do NOT calculate complex "Reachability Polygons" when the patient is safe at home (DEFCON 5).
• Emergency Only: We only trigger the advanced Mapbox computation when the patient enters DEFCON 3 (Wandering Confirmed).
• Caching: We cache "Safe Zone" maps for 7 days, so we don't re-calculate the same neighborhood over and over.

Q: What happens if I can't afford the subscription?

A: Partnering with organizations like the Alzheimer's Association and local governments to provide "Safety Scholarships" for low-income families is our next planned milestone. We will make a public announcement when this launches.

Q: Can I use this in South Korea or other countries?

A: Yes.

• USA: Optimized for suburban sprawl (Imperial units).
• South Korea: Optimized for high-density urban environments. We use MapLibre technology to switch map providers (bypassing Google Maps restrictions in Korea) to ensure accurate local mapping.

Q: What is the "Hold Harmless" clause?

A: Technology helps, but it is not perfect. Batteries die. GPS drifts. By using the app, you agree that Rientro is a tool, not a guardian. You accept that we are not liable if a rescue fails due to hardware limitations or environmental factors.

Q: If I'm monitoring Mom and Dad on the same account, can they see each other's location?

A: No. Patients do not have app accounts — only caregivers do. The watch is a one-way transmitter: it sends data to the caregiver's app, but shows nothing to the patient. Your mother's watch cannot see your father's data, and vice versa. Only the caregiver account (your phone) has visibility across all patients.

🏥 Facility: Command Center Dashboard

Q: What is the Command Center dashboard?

A: The Command Center is a web-based dashboard at safereturn.care/dashboard designed for memory care facilities, assisted living communities, and hospitals. It shows every enrolled resident's status at a glance — no app installation required. Staff log in from any browser and see a live-updating grid of all residents with DEFCON color coding.

Q: Does the dashboard update automatically?

A: Yes. The dashboard auto-refreshes every 30 seconds. A green "LIVE" indicator in the top right corner shows the last update time. You do not need to manually reload the page.

Q: What can I see on the Mission Detail page?

A: When you click any incident from a resident's history, you see:

• GPS trail on a map — the resident's path color-coded by DEFCON level (green to red)
• Escalation timeline — every automated action with timestamps (push notification, SMS, EMS dispatch)
• Stat badges — duration, peak DEFCON, peak distance, and resolution
• Patient reference card — medical info for reading to EMS dispatch

Q: How do I export an incident report for compliance?

A: On the Mission Detail page, click "Export Report". This opens a print-optimized page with the resident's information, incident summary, full escalation log, and a signature line. Click "Print / Save PDF" to generate a clean document. This replaces the need to screenshot the dashboard.

Q: What is the Wandering Heatmap?

A: The Heatmap page (accessible from the sidebar) shows where residents tend to go when they leave the safe zone. Colored circles on a map represent incident clusters — larger circles mean more incidents, and the color shows average severity. You can filter by individual resident or view all residents, and select 7, 30, or 90 days of data. Use this to identify exits or areas that need additional security measures.

Q: What are risk trend badges?

A: Each resident's card on the Overview grid shows a risk trend arrow:

• Red arrow up (WORSENING) — incidents are becoming more severe compared to their history
• Yellow dash (STABLE) — no significant change
• Green arrow down (IMPROVING) — incidents are becoming less severe

This helps you identify residents who may need a care plan adjustment before a serious incident occurs.

Q: What analytics does the dashboard provide?

A: The dashboard provides:

• Facility-wide stats on the Overview page: total incidents, average response time, average severity, and highest-risk resident
• 30-day timeline chart on each Patient Detail page: daily incident count and peak DEFCON level as a visual graph
• Wandering heatmap: geographic clustering of incidents to identify problem areas
• Per-patient statistics: total missions, average DEFCON, maximum range

⚙️ Administrative: Partnerships

Q: I represent a Police Department. How does "Project Lifesaver Upgrade" work?

A: Traditional systems use radio trucks that take hours to deploy. Rientro upgrades this to Instant Digital Intercepts. In our Professional Tier (coming soon), officers can receive a "Rescue Bio" (Photo + Live Map) directly on their patrol tablets. For now, families can instantly Share a live tracking link with officers on the scene, reducing response time from hours to minutes.

Q: I am an Insurance Provider. Why should we cover this?

A: A single claim for a lost patient (hospitalization, search costs, trauma) can exceed $50,000. Subsidizing a $29.99/month subscription reduces this risk by over 90%. It is a massive ROI for Long-Term Care (LTC) providers.