PII (Personally Identifiable Information)
PII is any data that can identify a specific person, either on its own or combined with other information.
PII is personally identifiable information — any data that can identify a specific individual, either directly or when combined with other data. For voice AI, PII includes the caller name, phone number, email, Aadhaar, PAN, date of birth, bank account numbers and anything spoken during a call. Every transcript, recording and log entry a voice agent produces is a PII surface that must be secured.
What counts as PII
PII is any data point that can be traced back to a real person. In the Indian context this typically includes full name, mobile number, email address, residential address, Aadhaar number, PAN, voter ID, bank account and card numbers, date of birth, and biometric data like voiceprints. Even a call recording by itself is PII because a voice is biometric.
Sensitive vs general PII
Not all PII carries the same risk. General PII like a name or email is lower risk on its own. Sensitive PII — Aadhaar, financial account numbers, health information, passwords — can cause direct harm if leaked and usually needs stronger controls: encryption, access restrictions, shorter retention and explicit consent.
Why PII matters for voice AI
A voice agent is a PII factory. Every call captures the caller's voice, whatever they say, and whatever the agent reads back. That data flows through speech-to-text, the LLM, text-to-speech, call recordings, analytics dashboards and backup systems. Any of those stages can become a leak point if not designed carefully.
How ThinnestAI handles PII
ThinnestAI is built for DPDP Act compliance. Customer data is stored in Mumbai region with encryption at rest and in transit. Access is role-based so only authorized operators can see transcripts or recordings. Retention windows are configurable per workload, and self-hosted deployments keep data entirely inside the customer's own cloud account.
More definitions
A voice AI agent is an AI-powered system that has real-time spoken conversations — over a phone call, a web widget or a SIP trunk — using speech recognition, a language model and speech synthesis.
Voice AI is the umbrella term for AI systems that understand and generate human speech in real time — powering voice assistants, phone agents, voice chatbots and real-time translation.
Conversational AI is the category of AI systems designed to interact with humans in natural language, across chat, voice, email and messaging — using NLU, LLMs and tool-calling to hold multi-turn conversations that actually accomplish work.
IVR is a rigid scripted decision tree (press 1 for sales). Voice AI is a natural-language agent that understands free-form speech, uses LLM reasoning, and calls tools to take real actions.
BYOK means you bring your own API keys for the LLM, STT and TTS providers, and the voice AI platform routes usage through your accounts instead of bundling the provider costs into its own pricing.
BYON means you bring your own phone number — via a Twilio, Vobiz or Exotel account — and connect it to the voice AI platform via SIP, instead of renting a number from the platform itself.