US airport security procedures will become more gender-neutral, with changes to scanners used for screening and the use of an "X" for travellers going through Precheck who do not identify as male or female, the Biden administration said Thursday.
Transportation Security Administration officers will also receive new instructions on screening intended to make procedures less invasive, the Department of Homeland Security said in a statement.
They are among a series of travel-security measures announced by the department in conjunction with Transgender Day of Visibility.
President Joe Biden is marking the day by advocating against what his administration terms "dangerous anti-transgender legislative attacks" that have passed in statehouses across the country.
"DHS is committed to protecting the travelling public while ensuring that everyone, regardless of gender identity, is treated with respect," Secretary Alejandro Mayorkas said in the statement.