How to operate the pre-authorization of POS machine at the front desk of hotel room?

Pre-authorization: POS machine-main menu-pre-authorization-pre-authorization-swipe card-enter authorization amount-enter password (if there is no password, press Enter directly)-print out pre-authorization POS sheet.

Pre-authorization after swiping the card: POS machine-main menu-pre-authorization-pre-authorization completion-swiping the card-entering the amount of authorization completion-confirmation-printing the pre-authorization POS sheet.

However, the card pre-authorization is completed: POS machine-main menu-pre-authorization-pre-authorization completion-manual input-manual input of card validity period-manual input of pre-authorization code-manual input of authorization date-input of authorization completion amount-confirmation-print out pre-authorization POS sheet.

The above is for domestic credit cards.

So much for the introduction of how pos machines authorize consumption.