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A mystery Macau-based investor has emerged as a substantial shareholder in Star Entertainment Group only days after analysts warned that the cash-strapped casino operator was close to collapse.

Meanwhile, as federal leaders begin to roll out big-spending election promises, the Australian Airports Association has called for the next federal government to create a more seamless travel experience at international gateways with innovations such as digital passenger cards, biometrics and more Smartgates.

And one of the country's biggest broadband providers, TPG, has criticised the government's $3bn injection into the NBN , saying Labor should be fixing areas where competition has broken down, rather than building networks.