When one person shops on behalf of another (family member, partner, roommate) based on a verbal, one-time list, critical details get lost in the process — items are forgotten, quantities are misremembered, and there's no way to confirm progress before leaving the store. The current workaround is a follow-up phone call mid-shopping to clarify or add items, which is inefficient and often too late to act on.

Core issue: Shopping instructions are communicated once, verbally, with no persistent, shared, or trackable reference — leading to missed items, wrong quantities, and repeated store trips.