NFTs are unique digital tokens stored on a blockchain (in our case - Polygon). An NFT has properties that distinguish it from other digital formats: It is non-substitutable and non-copyable. Therefore, an NFT can only belong to one owner at any specific moment.
Event organisers can issue tickets on Ontapp and each one is an NFT where they can serve as a ticket providing a unique record of ownership of a set of rights to an event. Customers can then store NFTs in a secure wallet that they can access on any device.