What is Football Technology? Do you know what is VAR? The crash course today concludes the most updated football technology and explain how it works for the exciting football games. 

For more of my research in NFT , Metaverse technologies and digital sociology, please check out my research blog site:

https://medium.com/@ernestina9538_51700

For more information on my new book: 'Talking NFT Metaverse' , digital arts, and Metaverse, please check out my website:

https://ernestinazhuart.wixsite.com/artist

If you would like to collect relative NFT artwork, please find me on OpenSea