Real-Time Phone Scam Shield

A scam call sounds like a normal call, until it's too late.

Sachet listens quietly to the conversation as it happens and warns you right on screen before you share an OTP, click a malicious link, or send hard-earned money.

Try Live Demo Learn How it Works

Transcripts Deleted After Call

Zero Audio Storage

Hindi & Hinglish Speech

Sachet Shield Active

Active Threat

89 / 100

Threat Level

Severe Danger ⚠️

Digital Arrest Scam Detected Caller claims CBI authority, creates fake arrest threats, and demands urgent money transfer.

Caller: "Aapke Aadhaar par arrest warrant jaari hua hai. Turant video call par aaiye..."

You: "Kya? Maine toh kuch nahi kiya sir..."

The Epidemic in India

The Silent Epidemic in Our Living Rooms

Digital arrest, fake bank alerts, and urgent courier parcels: scammers target ordinary citizens using psychological coercion.

₹19,813 Cr

Lost to Cyber Frauds in 2025

Reported through national cyber fraud records in 2025 alone, representing massive financial drains on ordinary households.

UP: Top 5

States by Total Losses (2025)

Uttar Pradesh ranks among the top five states in India by financial losses, with citizens losing about ₹1,443 crore to cyber scams in 2025.

3 in 4

Rupees Lost Are Never Recovered

Three out of every four rupees siphoned by cyber fraudsters are lost permanently, proving why scams must be intercepted before funds are sent.

Behavioral Progression

The Anatomy of a Scam Call

How scammers engineer panic in under 3 minutes, and how genuine institutions behave differently.

The Imposter Arc (Scam Call Progression) High Escalation Risk

Phase 1 0:30 Min

Fake Authority

Caller claims to be from CBI, Crime Branch, TRAI, or Bank Vigilance with fake badge numbers.

Phase 2 1:15 Min

Fear & Isolation

"Stay on video, lock your door, do not tell your family. This is an official confidential case."

Phase 3 2:00 Min

Extreme Urgency

"Your bank accounts will be seized in 30 minutes unless you verify your identity right now."

Phase 4 3:00 Min

Demand for OTP / Cash

"Transfer all funds to our RBI safe verification account" or "Share the 6-digit OTP immediately."

Genuine Institutional Call (Safe Pattern) Zero Coercion

Phase 1 Identity

Clear Identification

Provides verifiable employee ID, department, and official reference ticket number without hostility.

Phase 2 Options

In-Branch Alternatives

"You may visit any official bank branch or customer service center at your convenience."

Phase 3 Safety

Explicit Safeguards

Explicitly states: "Our staff will never ask for your confidential OTP, UPI PIN, or password."

Phase 4 Respect

Calm Resolution

Caller accepts callbacks to official toll-free numbers and does not pressure or threaten the citizen.

Engineered for Safety

Intelligent Guard, Respecting Privacy

An ultra-lightweight processing engine running locally or ephemeral, built for zero eavesdropping.

Call Turn-by-Turn Analysis

Analyzes conversational shifts sentence-by-sentence. Detects intimidation, isolation tactics, and psychological pressure.

Fine-Tuned Speech-to-Text

Handles colloquial Hindi and code-mixed Hinglish naturally, parsing conversational speech without bias.

Semantic Risk Engine

20-signal psychological detector tracking authority impersonation, arrest threats, OTP requests, and urgency.

Live Guard Warning

Visual risk meter with actionable Hindi guidance warns the user before the OTP or money transfer happens, not after.

Interactive Simulation

Experience Sachet in Action

Toggle between common scam scripts or speak directly via your microphone to watch the risk meter update live.

Live Call Ingestion Text & Voice Stream

Select a sample scam script above or speak into your microphone to simulate an ongoing call.

Configure API endpoint & key

Real-Time Risk Meter MuRIL Multi-Signal AI

⚠️ Strong Warning: High probability of scam! Do not share OTPs, click links, or transfer funds. Hang up and verify through official channels.

/ 100

NO CALL YET

Conversational Risk Score

Select a sample call script or speak to activate the real-time risk meter.

Detected Psychological Signals

No active signals detected.

Risk Trajectory Over Call Turns 0 turns

Civic Empathy

Dignity and Safety for Every Family Member

Engineered with deep empathy for vulnerable groups most aggressively targeted by fraud syndicates.

Senior Citizens & Grandparents

Provides reassuring clarity against intimidating fake legal threats, mock police warrants, and pension deactivation scams.

Women & First-Time Digital Users

Instills confidence when navigating mobile banking, UPI payments, and suspicious courier issues without anxiety.

Families (Guardian Mode)

Allows exporting detailed call records with timestamps and risk scores for prompt reporting to the 1930 Cyber Helpline.

Rigorous Benchmarks

Transparent Prototype Evaluation

Evaluated against diverse synthetic and real-world Hindi/Hinglish phone dialogues.

95.5%

Scam Detection Recall

Successfully identifies and triggers high-severity alerts before the critical OTP or financial transfer point.

14.6%

Hard-Negative False Alarm

Tested against genuine bank OTP reminders, delivery coordinators, and clinic calls without excessive nuisance alerts.

1.2 sec

Average Turn Analysis Latency

Ultra-low latency streaming inference ensures on-screen advice arrives while the caller is still speaking.

🔬 Methodology Note: Evaluated on fine-tuned MuRIL (Multilingual Representations for Indian Languages) with consecutive-confirmation alert gating. All benchmarks are reproducible via the evaluation suite in eval/.

Protecting India's Next Half-Billion Digital Citizens

Sachet is built as open-source civic defense technology. Explore our conversational safety engine, synthetic datasets, and evaluation code on GitHub.

View on GitHub Developer API Specs