Because of his name, 'Nuru' can't get a visa, can't book a hotel, can't even cancel his internet contract, and mail addressed to other people keeps coming.

In the computer science field, the term 'Null' is used to mean 'something that doesn't represent anything.' This practice has caused many problems for people with 'Null' in their name.

When Your Last Name Is Null, Nothing Works - WSJ
https://www.wsj.com/lifestyle/null-last-name-computer-scientists-forms-f0a43b08

Null is a German word meaning '0 (zero)' and was brought into the computer world by Anthony Hoare (also known as Tony Hoare), who is also known as the inventor of the sorting algorithm ' Quicksort '. Null is used in many programming languages and databases, but one of the errors in Java, 'NullPointerException', is widely known among Internet users as 'Nurupo'.

What is Nurupot? [Word article] - Niconico Encyclopedia
https://dic.nicovideo.jp/a/%E3%81%AC%E3%82%8B%E3%81%BD

Some input forms installed on websites and management systems that compile various information use 'Null' to indicate the state where 'no data has been entered.' Also, if input forms have prohibited words set as a countermeasure against ' injection attacks ,' an attack method in which scripts are entered instead of normal words, they may not accept the input of 'Null.'

Due to the system's response to this null, people with 'null' in their name are unable to receive various services properly. Nontra Null, who got the surname 'Nur' through marriage, was not issued a visa when she tried to travel to India in 2014. After contacting the Indian consulate, she was told that 'we tried to issue a visa multiple times, but the computer system could not process Mr. Nur's surname.' In addition, there was a case where 'packages addressed to the company and with no name on them' were delivered to Mr. Nur's desk at work.

Jan Null, a California resident, said that when she tried to make a hotel reservation, 'no matter how many times I entered my name, it was recognized as nothing and I was sent back to the first screen.' At this time, the hotel staff advised Null to 'try entering a different last name.' Furthermore, Morgan Null, a Pennsylvania resident, said that when she tried to cancel her internet contract, the staff told her, 'You can't cancel your internet contract because you don't have a last name associated with your account.'

In the United States, a man who obtained a license plate with the number 'NULL' was charged a huge fine. In this case, vehicles that were deemed to have 'incomplete data and could not be confirmed' in a parking violation database were treated as 'NULL', and the fines for all vehicles treated as 'NULL' were linked to the man, resulting in a huge fine bill.

A man who registered 'NULL' on his car's license plate is charged a huge fine for parking violations - GIGAZINE

by Charleston's TheDigitel

To avoid issues related to Null, Nontra Null uses her maiden name and puts a hyphen between her last name and first name, while Jean Null avoids these issues by entering the initials of his first name before the null, writing 'JNULL.'