Blockchain to help with Brexit?!

[thethirdson]

To those that do not live in Britain, majority of the country voted to leave the EU in 2017 and the whole preparation for leaving the EU (including setting new rules and standards for almost all industries, immigration, etc.) is called Brexit.
As everyone expected, Brexit is not going well. Last week UK PM delivered the Brexit Plan to EU leaders, and the plan was rejected by 27 countries (there is a total of 28 EU members including UK...).  UK Chancellor of the Exchequer (guy in charge of UK's finance) mentioned in a party conference that blockchain technology can be used for border and immigration issues http://www.cryptoinnout.com/news-20181012-143.html

But HOW!!!!!! I cannot think how this will be done in practice... Somebody shed a light?

[TECSHARE]

They could issue "passports" or "VISAs" with a unique blockchain identifier (private and public key) which could make electronic tracking and verification of legal residents simpler. It could even be used to issue temporary permits. This would make it a lot more complicated to forge documents.