What problem does it solve?
Static QR codes on medicine strips can be photocopied, screenshotted, or printed onto fake packs, so a “scan OK” doesn’t guarantee the drug is genuine or came from a legal source.

MedTag adds a live, cryptographic “handshake” between the pharmacist’s phone and the customer’s phone, so only someone physically present with the pharmacist can get a valid token.

Every verified handover is logged, making it easier to trace batches, detect abnormal patterns (sudden spikes of scans for one ID), and support audits or investigations.

How people can use it

1. For consumers (patients)
   Tap or scan the pharmacist’s phone when buying medicine to see a clear, real‑time status like “Authentic – sold by Authorized Retailer X, Batch Y”.

Reduce the risk of consuming counterfeit or substandard drugs, especially for high‑risk medicines (chemotherapy, epilepsy, insulin, etc.).

Keep a digital record of purchases on the phone, which is useful for chronic patients, insurance claims, and follow‑up visits.

2. For pharmacists and distributors
   Use the app instead of printing special tags or smart packaging, so it adds security without new hardware costs.

Each sale automatically creates a traceable transaction (who sold, what batch, when), which can help with regulatory compliance and easier recalls.

Dynamic, short‑lived tokens or NFC signals make cloning and screenshot abuse practically useless, because a copied token will expire or be marked already used.

3. For regulators and pharma companies
   Access an immutable log of all successful verifications, helping to spot suspicious locations or times where duplicated IDs show up.

Support targeted recalls by knowing exactly which batches went to which pharmacies and were actually handed over to real customers.

Use aggregated data to map** counterfeit** hotspots and plan enforcement or awareness campaigns more efficiently.

How it makes tasks easier/safer
Replaces **manual, visual checks **(reading labels, trusting a QR sticker) with automatic cryptographic verification, reducing human error.

Reduces the need for specialized scanners; any** NFC/QR‑enabled smartphone** becomes a trusted verification tool.

Because everything is software‑based (HCE + backend + ledger), it’s fast to deploy at scale, update rules, or revoke compromised IDs without touching physical packaging.

In short, MedTag turns the act of buying medicine into a secure digital transaction instead of a blind trust exercise, making life safer for patients and more accountable for everyone in the supply chain.