The ordering screen of Toast POS has a button named Tab which will allow the user to attach the customer's name to the order. This can be done by either manually typing in the name or swiping the customer's credit card to grab the name from the card.
At any time from the ordering screen, tap the Tab button
A prompt will appear on screen to either enter the name for the tab manually or swipe a credit card:
Type in the name manually and tap OK
The screen reverts to the order screen and the name you entered is now attached to the order
You can also swipe a customer's credit card to use their name as it appears on the card to open the tab.
Swipe the card from at this prompt and the name will be entered automatically from the magnetic stripe of the card.
Notice the message that this will NOT charge the customers card, it will only save the name.
Using this method, when the customer would like to close the tab, the card will have to be taken and swiped again in Payment Mode or another form of payment must be accepted to close the check.
Using the swiping method to open the tab makes finding the tab later on much easier. From the Previous Checks screen you can utilize Lookup button in the top-right and swipe the card used to open the tab to pull it up automatically!