Several national identities are supporting a new postcard campaign to change the Federal Government's asylum seeker policies.

Afghan temporary protection visa holders have distributed 30,000 postcards nationwide, focusing on the role Afghans played in outback settlement.

Church leaders, politicians and sporting identities are backing the campaign.

Aboriginal leader Lowitja O'Donoghue says it is time asylum seekers were given a fair go.

"I'm involved because I care basically," she said. "I come from a background of oppression so I understand that people who flee their own country seeking asylum in another country have good reason to do that," Ms O'Donoghue said.

Afghan asylum seeker Hassan Varasi says life under the TPV system is dominated by fear and insecurity.

"It's difficult being on a temporary protection, living in limbo and holding a temporary protection visa," he said.

"You do not know about your future, your future is uncertain and you're living in limbo and darkness."