A new feature we have become made aware of is the ability to deposit cheques digitally through your mobile banking app on your smartphone. It seems this feature is only available at some of the major banks but it may be worthwhile checking with your bank to see if this feature is offered.
NAB: https://www.nab.com.au/personal/online-banking/mobile-banking-app/mobile-cheque-deposit
Westpac: https://www.westpac.com.au/business-banking/online-banking/online-features/mobile-cheque-deposit/