Package tracking usually feels backwards. The customer gets a tracking number, opens a page, refreshes it, waits, refreshes again, and tries to decode carrier status updates. Even when a business sends SMS updates, those messages are usually one-way.
Source: [Dev.to](https://dev.to/sonam_50a41a4ced7e6b4f3fa/build-a-shipment-agent-that-texts-customers-when-packages-move-5fp2)