Australia has passed controversial laws designed to compel technology companies to grant police and security agencies access to encrypted messages.
The government says the laws, a world first, are necessary to help combat terrorism and crime.
However critics have listed wide-ranging concerns, including that the laws could undermine the overall security and privacy of users.
The laws were rushed through parliament on its final day of the year.
The Labor opposition said it had reluctantly supported the laws to help protect Australians during the Christmas period, but on Friday it said that “legitimate concerns” about them remained.
Cyber-security experts have warned the laws could now create a “global weak point” for companies such as Facebook and Apple.