Foundation · 2 min
What you need to know
How long should a cart be kept?
Choose a retention period that fits the store and its privacy practices, and state that items are not necessarily reserved. A product left in a cart is not a guaranteed stock hold.
What happens across devices?
A signed-in customer may expect the same cart on a phone and laptop if the store supports it. Test which cart wins if both devices have different items and avoid silently losing a choice.
What if an item changes?
If the price rises or the item sells out, the cart displays the new price or status and asks the customer to review before payment. Do not charge the previously displayed total or replace the product without notice.
A quick store check
Save a cart, change one product condition, then reopen it on the same and another device. Confirm the buyer sees the change before checkout.
Foundation · 2 min
Frequently asked questions
Should the cart remember everything forever?
No. Define storage and expiration according to the product, system and privacy policy; let customers review the current order before paying.