PC Surveillance - Webcam Motion Detection & Alerts

About

Turn your PC webcam into a powerful surveillance system. Detect motion in real time, automatically capture photos, and receive instant email alerts with the captured image attached — all from your browser, no software to install.

Whether you want to monitor your room while you're away, keep an eye on your office, or secure any space with a webcam, this extension does it all with a sleek, CCTV-style interface.

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KEY FEATURES
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◉ MOTION DETECTION MODE
Automatically detects movement through your webcam using intelligent pixel-difference analysis. When motion is detected, a photo is captured and saved instantly. Adjustable sensitivity slider lets you fine-tune detection — from catching the slightest movement to ignoring small changes like lighting shifts.

◉ INTERVAL CAPTURE MODE
Set a custom timer (seconds or minutes) and the extension will capture photos at regular intervals. Perfect for time-lapse monitoring, periodic room checks, or any scenario where you want scheduled snapshots.

◉ LIVE SURVEILLANCE MONITOR
A full-page monitoring screen with a professional CCTV-style interface:
  - Live camera feed with real-time timestamp
  - Motion level indicator bar with threshold visualization
  - Corner marks, scanlines, and REC badge — just like real surveillance footage
  - Visual "MOTION DETECTED" alert that flashes when movement is caught

◉ AUTOMATIC PHOTO DOWNLOAD
Every captured photo is automatically saved to your Downloads/MotionDetection folder as a JPEG file with date-time naming (capture_20260303_125042.jpg), so you always have a local backup.

◉ EMAIL ALERTS WITH PHOTO (PRO)
Receive an email notification every time motion is detected, with the captured photo embedded directly in the email. Know instantly when something moves in front of your camera, even when you're away from your PC.


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FREE vs PRO
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FREE VERSION includes:
  - Motion detection with adjustable sensitivity
  - Interval capture mode (seconds or minutes)
  - Live surveillance monitor with CCTV interface
  - Automatic download of all captured photos
  - Up to 50 photos per session
  - 5-second cooldown between captures

PRO VERSION unlocks:
  - Unlimited photo captures per session
  - Email alerts with photo attached on every motion detection
  - Faster 3-second capture cooldown
  - All future premium features

To activate PRO, enter your unlock code in the extension popup. You can purchase an unlock code from the link provided inside the extension.


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HOW TO USE
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GETTING STARTED:
1. Install the extension and click its icon in the toolbar
2. Choose your detection mode: Motion or Interval
3. If using Motion mode, adjust the sensitivity slider (left = less sensitive, right = more sensitive)
4. If using Interval mode, set the capture frequency (e.g., every 10 seconds)
5. Click "Enable Monitoring"
6. A new tab opens with the live surveillance monitor — allow camera access when prompted
7. The system is now active! Photos are captured automatically and saved to your Downloads folder
8. Click "Stop" at any time from the monitor page or the extension popup
9. Open the Gallery to review, download, or delete captured photos

TIPS FOR BEST RESULTS:
  - Position your webcam to cover the area you want to monitor
  - Start with medium sensitivity (around 30-40) and adjust based on results
  - Lower sensitivity = only large movements trigger capture (reduces false positives)
  - Higher sensitivity = even small movements trigger capture (catches more, but may over-trigger)
  - Keep the monitor tab open — the camera needs this tab active to work
  - For long monitoring sessions, use Interval mode to get periodic snapshots without motion dependency


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HOW TO SET UP EMAIL NOTIFICATIONS (PRO)
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Email notifications use EmailJS, a free service that sends emails directly from the browser. Setup takes about 5 minutes, one time only. After setup, your settings are saved automatically — they persist even when you close and reopen the extension.

STEP 1: Create an EmailJS account
  - Go to https://www.emailjs.com and sign up for free
  - The free plan includes 200 emails per month, more than enough for surveillance alerts

STEP 2: Add Gmail as an email service
  - In your EmailJS dashboard, click "Email Services"
  - Click "Add New Service" and select "Gmail"
  - Click "Connect Account" and authorize with your Gmail
  - Your Service ID will be shown (e.g., service_abc1234) — copy it

STEP 3: Create an email template
  - Click "Email Templates" in the EmailJS dashboard
  - Click "Create New Template"
  - Set the Subject field to: {{subject}}
  - Set the Content (HTML) to:
      <p>{{message}}</p>
      <p>Time: {{timestamp}}</p>
      <img src="{{photo_data}}" style="max-width:100%;border-radius:8px" />
  - In the template settings, set the "To Email" field to: {{to_email}}
  - Save the template and copy the Template ID (e.g., template_xyz5678)

STEP 4: Get your Public Key
  - In EmailJS, go to Account > API Keys
  - Copy your Public Key

STEP 5: Configure the extension
  - Open the extension popup
  - Enter your PRO unlock code in the "Activate PRO" section
  - Scroll to the Email Alert section
  - Paste your Service ID, Template ID, and Public Key into the corresponding fields
  - Enter the email address where you want to receive alerts
  - All fields save automatically as you type — no need to click Save
  - Turn on the toggle "Send email on motion detection"
  - Click "Send Test" to verify — you should receive a test email within seconds

STEP 6: Done!
  - Now every time motion is detected, you will receive an email with:
      - Alert subject with date and time
      - Description of the event
      - The captured photo embedded in the email
  - There is a 15-second cooldown between email notifications to prevent spam
  - Your EmailJS settings are saved permanently — they will be there next time you open the extension


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PRIVACY & PERMISSIONS
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This extension takes your privacy seriously:
  - Camera access is only used when you explicitly start monitoring
  - All photos are stored locally on your device (in browser storage and Downloads folder)
  - No data is sent to any server — except email alerts, which go through EmailJS only if you configure and enable them
  - The extension requires these permissions:
      - Storage: to save your settings and photos locally
      - Downloads: to save captured photos to your Downloads folder
      - Notifications: to show desktop alerts when photos are captured
  - You can revoke camera access at any time through Chrome settings


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USE CASES
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  - Home security: monitor your room, entrance, or any area
  - Office surveillance: keep an eye on your workspace
  - Pet monitoring: watch what your pets do when you're away
  - Baby room monitor: get alerts when there's movement in the crib area
  - Package watch: monitor your front door for deliveries
  - Time-lapse: capture periodic photos of a project, plant growth, or any scene
  - Proof of presence: document activity in a space with timestamped photos