The sales interface has an optional customer facing display.
this setup requires an additional monitor which is customer facing and informs them of transaction details and can be used to capture digital signatures.
Accessing the customer facing display:
to access the display navigate to the sales interface and click on the "..." dropdown
The Customer Facing display will appear:
open the display
To enter full-screen mode click on the icon next to the shopping bag.
On the secondary display you now have information relevant to the sale:
When a transaction is completed the signature pad area will appear:
Customer facing display with signature
When using an iOS device
Make sure you go into the settings for the PHP POS app and make sure to turn on "Keep Screen On When Running". See screenshot below: