Minimum development checklist

This page outlines the items a POS product must implement to complete a minimum integration. It should be used as a checklist for POS developers to know what they are required to build.


  • The POS must send the correct Tenant code, POS Vendor Id and POS Version through to the EFTPOS terminal and increment the POS Version once a new build is created
  • The pairing screen includes a "Save" button for EFTPOS address and POS ID
  • Pairing secrets should not be exposed while pairing, unpairing or rolling the keys
    • Web-Based Integrations: The POS must have the option to pair using an automatically generated EFTPOS Address
  • User can accept or decline the hmac code during pairing
  • When the POS is in a paired connecting state the IP address is editable to the user
  • When paired and connected, and the network disconnects, the connection status updates to paired connecting
  • The POS handles terminal instructed key rolling (available in EFTPOS Terminal Menu)
  • The connection between the terminal and the POS should remain persistent
  • The POS can be paired and unpaired with the EFTPOS terminal successfully
  • When unpairing on the POS the user is prompted to unpair on the terminal (see Web-based EFTPOS UI or Non Web-Based EFTPOS UI)


  • POS can process any transaction request
  • POS must support Australian Dollars (AUD)
  • POS prompts the user to accept or decline when a signature transaction is initiated
  • If a transaction is declined the sale needs to remain open
  • A user can cancel a transaction from the POS or EFTPOS Terminal
  • The POS can handle and report correctly on terminal-based surcharging
  • Hospitality POS systems need to be able to handle and report correctly on terminal-based tipping
  • The pos_ref_id should be unique for each transaction. Retrying a transaction (eg if the PIN is invalid, signature declined etc) should generate a new pos_ref_id

Transaction recovery

  • If there is a network disconnection during a transaction the POS can recover at any point
  • In the event that the POS cannot recover a connection (or does not know the outcome of a transaction) the user is given the option to mark the transaction as Complete, Incomplete, or Cancel.

Integrated Receipts

  • The POS prints or stores the EFTPOS receipts.
  • Ability to reprint the EFTPOS receipts from the POS
  • Receipts that require a Signature are printed off as requested - Merchant Copy for signature request and the sale closes when Approved or remains open when Declined.

Integrated Settlement

  • The POS offers the user the ability to settle the EFTPOS terminal through the POS


  • The POS should make the mx51 spi.log available for troubleshooting purposes.
  • Logs can be exported and shared outside of the POS application
    Each Library will have a different way to create the spi logs.