Flyer monitoring is a system designed to collect and analyze flyers distributed by retailers in a specific geographic area, often a country. The results are generally used by these retailers for competitive intelligence purposes. Data collection methods for flyer monitoring vary: they can be carried out by panelists who list the flyers received in their mailboxes, through automated tracking of online flyers from retailers, or through direct feedback from these retailers. The collected information is then entered by operators. For example, flyer monitoring makes it possible to analyze promotional activity by retailer, product, and brand, as well as to perform semantic analyses on the promotional messages disseminated by retailers. However, the use of flyer monitoring is being questioned due to the significant decline in the use of this communication channel. An example of data from the A3 Distrib flyer monitoring system could be: [insert specific data].