In the Pickware Admin, there is no way to directly create customer cards. However, you can create customer cards yourself using any EAN code generator from the internet and the customer number.
It's important that you select Code-128 as the format for the EAN code and prefix the customer number with ^8. For customer number 10059, you would need to enter ^810059 in the EAN code generator. You can then scan the barcode you created at checkout. Thanks to the prefix, POS automatically recognizes that it's a customer and selects the corresponding customer account.