6) Gift cards
The ability to sell and accept gift cards tend to be included on pricier POS subscriptions, or it is an add-on feature costing extra. POS systems may sell gift cards in a digital format via email, or give the option to order a stack of cards to sell in-store.
7) Other payment methods
A POS system may give you options to record other payment methods than cards, cash and gift cards. This could be a voucher (similar to gift card, but promotional rather than provided as a gift), manual card entry (for payment cards in a POS system with integrated card processing), payment card on file (retrieved through customer library with saved card details), cheques, store credit vouchers, invoicing, payment link and other methods recorded manually in the POS app.
8) Split bills vs. split tenders
Splitting the bill is mainly relevant to restaurants where people tend to pay separately for their own food from a shared group bill. This produces individual receipts for the particular items paid for by individuals. It varies how advanced split bills can be. For example, you can split the amount, divide an itemised bill by product, or divide by an equal proportion of the bill, e.g. 50/50 between two people.
In retail POS, splitting the bill is not so relevant. Instead, you should be able to split the tender so you pay some of the amount in e.g. cash and put the rest on a credit card. This produces one receipt for the whole transaction, as opposed to split bills that provide separate receipts for each payment.
9) Partial payments and layaways
Do you accept deposits for an item? Not all POS systems allow you to accept a partial payment of a product with a fixed price, but some have a layaway function for this purpose. This is especially relevant for customer orders or when someone wants you to reserve an item and come back later to pay the rest of the amount in full.
Modern POS systems should be able to send itemised email receipts as the bare minimum, sometimes giving the option to send a text receipt to a phone number. Furthermore, you should be able to link the system with a compatible receipt printer for paper receipts. It varies which printer models are compatible with each POS system, so if you have a printer already, check that the software supports it.