What are the mainstream data collection tools to collect this part of data transmitted from the supermarket cashier system to the small ticket printer?

If it is to capture print stream data, the current mainstream way:

1. data acquisition terminal non-inductive acquisition mode: the data acquisition terminal is used to directly acquire printing process information and analyze it to obtain receipt data. The data acquisition terminal includes acquisition software and hardware acquisition box, including the current mainstream direct replacement printer, and uses data acquisition+printing integrated equipment to collect data; At present, this kind of product has very mature technology, supports the configuration of additional printing function, and can directly print the text you need to display, including the QR code of the official account of the applet \ WeChat, etc. , on the consumer receipt. The overall solution generally does not need to transform the cashier system, but only needs to deploy the data acquisition terminal, which is a relatively common acquisition method.

2, technical interface docking, generally docking with the cashier system manufacturers such as Shangchao, and obtaining sales data from the bottom. This requires technology development and docking, which is a relatively heavy link. If it is a supermarket chain, the system is unified, and the cashier system itself has the function of data collection, so it is more appropriate to connect and get through at one time.