The problem TrackPassenger solves

As we all know, COVID-19 is a pandemic declared by WHO.
And,this virus is creating huge loss of life and money to every nation.
This also affects the economy and GDP growth of the nation.
There are various stages of this virus like Stage 1,2,3,4.
Currently, India is in Stage 2 where people are coming from the country where most people are infected and due to
that people of our country get infected.
This virus spreads from people to people very fast.
So,my solution of this problem is to track the recent travel history of the passenger i.e. which airlines the passenger has taken,its flight no. , PNR no. etc from which country to another country using Ethereum Blockchain.
So,with the help of this the airlines and ultimately the government can easily track the passenger.
So, If the passenger is from country which is most infected then the airlines can easily contact the person via mail to ask for any
symptoms which it has and can provide help if necessary and give health related guidelines.

Since,A database system can easily be hacked due to decentralisation.
Blockchain provides decentralisation and higher-level security as all data is stored in hash format.
This project is done with Ethereum as base platform.
The smart contract is live and is deployed onto RinkeBy Test Network.

Challenges I ran into

Converting this problem concept into the concept of Blockchain.Making Smart Contract according to this idea in Solidity language.
Some Errors in UI.