Build Phrase Detection Device Prototype (ESP32/NDP120)

Description

Project DescriptionWe are developing a compact, battery-powered device that listens for specific high-risk phrases during live phone conversations and triggers a local alert via a buzzer. The goal is to provide real-time protection against verbal coercion, often used in scams or social engineering attacks.
This job is to create the first working breadboard prototype, based on standard components and capable of detecting a small set of pre-defined trigger phrases.
What You'll Build:A breadboard prototype using:ESP32 microcontroller (or equivalent)NDP120 AI processor (or placeholder MCU with basic detection logic)MEMS microphoneBlue LED (power indicator)On/off switchRechargeable battery (or removable cell)Real-time voice phrase detection logic for a basic dataset of 10 trigger phrases (we will supply these)Local alert mechanism (LED blink or buzzer) when a phrase is detected
Deliverables:Fully wired breadboard prototype with all listed componentsWorking live microphone input detection for 10 predefined phrases (provided)Clear wiring diagram and component listTest video or demo of phrase detection workingPhysical shipment of the prototype to a UK addressAgreement to sign NDA before startingAll intellectual property remains the sole property of TrustCheck Technologies Ltd
Requirements:Experience with ESP32, voice/audio input, and low-power electronicsFamiliarity with real-time keyword/phrase detection using TensorFlow Lite, NDP120, or similarAbility to document and clearly explain prototype setupWillingness to sign a Non-Disclosure Agreement (NDA)
Future Opportunities:This is Phase 1 of a larger project. Later phases will include:Miniaturised PCB versionExpanded phrase detection engineIntegration with landline connectorsFull product development with vibration motor and housing