Many Changing Places Toilets use a Master Locksmith Access Key (MLAK) to open the facility.
The Master Locksmiths Access Key (MLAK) system is an initiative that allows people with disability to access public facilities across Australia including Changing Places toilets, accessible toilets and Liberty Swings.
People with disability are able to purchase an MLAK key which will open all toilets, playground equipment and other facilities fitted with a lock which uses the special MLAK cylinder.

For more information about the MLAK system, or to get an MLAK application form visit the Master Locksmith Association of Australia website:

Photos: Sydney International Airport