Major American airlines have said they will soon change their ticketing process to include choices such as “undisclosed” or “unspecified”. There could also be the optional title of “Mx”.
The airlines said they are making the change to be more inclusive in dealing with a diverse range of customers.
The decision has been applauded by campaign groups for transgender people.
“It’s a significant step forward for non-binary individuals, so they are not faced with a mismatch between their ticketing information and their legal identification,” Beck Bailey, of the Human Rights Campaign, said.